commonIpAttributes - SIP - CLI

In this section:

This section lists CLI commands to configure common IP attributes for communicating with the peer regardless of call direction.

Command Syntax

commonIpAttributes High Level Syntax

% set profiles signaling ipSignalingProfile DEFAULT_SIP commonIpAttributes
	callTransferFlags
	flags
	headerEncryptionFlags
	optionTagInRequireHeader
	optionTagInSupportedHeader
	relayFlags
	subscriptionPackageSupport
	transparencyFlags

commonIpAttributes Detailed Syntax

% set profiles signaling ipSignalingProfile <profile_name> commonIpAttributes 
	callTransferFlags 
		forceReRouteViaPsxQuery <disable | enable> 
		handleIpAddressesNotPresentInNetworkSelectorTableNst 
			<rejectCall | routeViaDefaultZoneIptg | routeViaDefaultiptg | routeViaTransferringIptg> 
	flags 
		addPChargingFuncAddr <disable | enable> 
		addPathServiceRoute <disable | enable> 
		callHoldInterworking <disable | enable> 
		clearmodeForDataCalls <disable | enable>
		contactTransparencyForIsFocusMediaTag <disable | enable>
		createPChargingVector <disable | enable>
		createPVisitedNetworkId <disable | enable> 
		createPathHeader <disable | enable> 
		createServiceRouteHeader <disable | enable> 
		customizedSessionTimerBehavior <disable | enable> 
		disableAlsoHeader <disable | enable> 
		disableHostTranslation <disable | enable> 
		disableMediaLockDown <disable | enable> 
		disableReferToUriParameters <disable | enable> 
		discardReceivedReasonHeader <disable | enable> 
		doNotIncludeSsAttributeInReInvite <disable | enable> 
		enableDefaultPUIProcedures <disable | enable> 
		enableDialStringHandling <disable | enable> 
		endToEndBye <disable | enable>
		fromHeaderAnonymisation <disable | enable>
		includeIpPortsInFromAndToHeaders <disable | enable> 
		includeReasonHeader <disable | enable> 
		includeSsAttributeInInitialInvite <disable | enable> 
		includeTransportTypeInContactHeader <disable | enable> 
		insertPeerAddressAsTopRouteHeader <disable | enable>
		lockDownPreferredCodec <disable | enable>
		mapCauseLocation <disable | enable> 
		mapSuspendResumeEventInPSvcInfoHeader <disable | enable> 
		mapUuiInPSigInfoHeader <disable | enable> 
		mimeCausePrecedeReasonHeaderCause <disable | enable> 
		minimizeRelayingOfMediaChangesFromOtherCallLegAll <disable | enable> 
		noContentDisposition <disable | enable> 
		noPortNumber5060 <disable | enable> 
		noUserinfoInContactHeader <disable | enable> 
		onlySelectedCodecInSessionRefresh <disable | enable> 
		pCalledPartyIDSupport <disable | enable> 
		pChgMsgInfo <disable | enable> 
		publishIPInHoldSDP <disable | enable> 
		reQueryPsxOnRegisterRefresh <disable | enable> 
		rejectRefer <disable | enable>
		relayDataPathModeChangeFromOtherCallLeg <disable | enable>
		replaceHostOnViaHeader <disable | enable> 
		restrictHistoryInfoHeader <disable | enable> 
		routeUsingRecvdFqdn <disable | enable>
		sdpOlineOnlyCompares <disable | enable> 
		sendAllAllowedCodecsForLateMediaInviteOrReInvite <disable | enable> 
		sendDirectMediaInfoInSdpAttribute <disable | enable> 
		sendOnlyPreferredCodec <disable | enable>
		sendPtimeInSdp <disable | enable> 
		sendRtcpPortInSdp <disable | enable> 
		sessionTimerRefreshUpdate <disable | enable> 
		setAcceptHeaderToApplicationSdpOnly <disable | enable> 
		setOlineDash <disable | enable> 
		setSessionVersionZero <disable | enable> 
		setSlineDash <disable | enable> 
		skipPsxQueryForRefer <disable | enable> 
		storePChargingFuncAddr <disable | enable> 
		storePChargingVector <disable | enable> 
		storePathHeader <disable | enable> 
		storeServiceRouteHeader <disable | enable>
		supportSCSCFRestorationProcedures <disable | enable>
		suppressMinSeIfNotReceived <disable | enable>
		terminalPortabilityInterworking <disable | enable>
		usePsxRouteforRegisteredInvite <disable | enable>
		validateAccessNwInfoHeader <disable | enable>
	headerEncryptionFlags <TBD>
	optionTagInRequireHeader 
		suppressReplaceTag <disable | enable> 
	optionTagInSupportedHeader <optionTagInSupportedHeader> 
		suppressReplaceTag <disable | enable> 
	relayFlags
		conferenceEventPackage <disable | enable>
		dialogEventPackage <disable | enable> 
		dtmfBody <disable | enable> 
		force503to500Relay <disable | enable> 
		info <disable | enable> message <disable | enable>
		messasge <disable | enable>
		notify <disable | enable> options <disable | enable> 
		options <disable | enable>
		publish <disable | enable> refer <disable | enable> 
		refer <disable | enable>
		referToHeaderRelay <disable | enable>
		regEventPackage <disable | enable> 
		sonusMediaBody <disable | enable> 
		statusCode3xx <disable | enable> 
		statusCode4xx6xx <disable | enable> 
		thirdPartyBodies <disable | enable>
		updateWithoutSdp <disable | enable>
	subscriptionPackageSupport
		supportRegEvent <disable | enable>
  		usePSXRouteForSBCInitiatedSubscribe (NOT SUPPORTED)
	transparencyFlags 
		acceptContactHeader <disable | enable> 
		acceptHeader <disable | enable> 
		acceptLanguageHeader <disable | enable>
		alertInformationHeader <disable | enable> 
		authcodeHeaders <disable | enable> 
		callInfoHeader <disable | enable> 
		contactHeader <disable | enable> 
		errorInfo <disable | enable> 
		externalBody <disable | enable>
		fromHeader <disable | enable> 
		geolocation <disable | enable> 
		geolocationError <disable | enable> 
		geolocationRouting <disable | enable> 
		historyInfo <disable | enable> 
		maxForwardsHeader <disable | enable> 
		messageExternalBody <disable | enable>
		mwiBody <disable | enable> 
		pAccessNetworkInfoHeader <disable | enable> 
		pCalledPartyID <disable | enable> 
		pChargingVectorHeader <disable | enable> 
		pEarlyMedia <disable | enable> 
		pVisitedNetworkIDHeader <disable | enable> 
		passCompleteContactHeader <disable | enable> 
		pathHeader <disable | enable> 
		pidfBody <disable | enable>
		pidfDiffBody <disable | enable>
		qsigBody <disable | enable> 
		reasonHeader <disable | enable> 
		referredByHeader <disable | enable> 
		requestURI <disable | enable> 
		resourceListBody <disable | enable>
		resourcePriorityOptionTag <disable | enable>
		rlmiBody <disable | enable>
		routeHeader <disable | enable> 
		serverHeader <disable | enable>
		serviceRouteHeader <disable | enable> 
		simpleFilterBody <disable | enable>
		sipBody <disable | enable> 
		sipfragBody <disable | enable> 
		toHeader <disable | enable> 
		toneBody <disable | enable> 
		unknownBody <disable | enable> 
		unknownHeader <disable | enable> 
		userAgentHeader <disable | enable>
		userToUserHeader <disable | enable> 
		viaHeader <disable | enable>
		warningHeader <disable | enable>
		watcherInfoBody <disable | enable>

Command Parameters

The IP Signaling Profile SIP Common IP Attributes are listed in the tables below.

Call Transfer Flags

Call Transfer Flags

Parameter

Length/Range

Description

forceReRouteViaPsxQuery

N/A

Enable this flag to allow

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to perform a PSX query for new routes instead of using the IP address received in the Refer-To header.

disabled (default) – When this flag is disabled, the
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does one of following:
- If the IP address in the Refer-To header is zero or matches the
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  signaling IP address, the
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  performs a PSX query for new routes.
- If IP address in Refer-To header does not match
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  signaling IP address and it is present in
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  Network Selector table, the
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  sends an INVITE message to the IPTG selected from the Network Selector table.
- If IP address in the Refer-To header does not match
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  signaling IP address and is not present in the
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  Network Selector table,
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  handles the transfer via the Handle IP Addresses Not Present In Network Selector Table NST field (see below).
enabled – Enable flag to cause
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to always perform a PSX query for new routes, regardless of the IP address received in the Refer-To header.

handleIpAddressesNotPresentInNetworkSelectorTableNst

N/A

Use this parameter to define how to handle a transferred call when the

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does not perform a PSX query for new routes and the IP address from the Refer-To header is not present in the Network Selector table. Options are:

rejectCall – The
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always rejects the call transfer.
routeViaDefaultZoneIptg – The
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sends the call transfer INVITE out from the Default Zone's IPTG.
routeViaDefaultiptg – This option is not applicable at this time.
routeViaTransferringIptg (default) – The
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sends the call transfer INVITE back out the transferring IPTG (i.e. the IPTG on which the REFER request arrived).

Flags

Flags

Parameter	Description
`acceptAlertInfo`	Enable flag for SBC to process the URI specified in the Alert-info header received in the 180 ringing message and use the tone specified in the Alert-Info header as the Local Ring Back Tone to play. When this flag is enabled, the tones processed override any incoming tones in the media stream. For example, when Accept Alert-Info is enabled, the SBC plays the tone specified in the Alert-info header of 180 ringing message overriding the inband tones included in the 180 ringing message. `disable` (default) `enable` When using PSX in your network, enable the `acceptAlertInfo` flag from PSX's IP Signaling Profile.
`addPChargingFuncAddr`	Set (enable) this flag to add the stored value of the PCFA header to a request or response.The PCFA header value is stored based on the flag. `disable` (default) `enable`
`addPathServiceRoute`	Enable this flag to allow Unable to show "metadata-from": No such page "_space_variables" acting as P-CSCF or IBCF to add two Path headers in REGISTER request towards the Core (createPathHeader must be enabled) OR allow Unable to show "metadata-from": No such page "_space_variables" acting as IBCF to add two Service-Route headers in 200 OK response for REGISTER towards the P-CSCF (createServiceRouteHeader must be enabled). `disable` (default) `enable`
`callHoldInterworking`	Set flag to enable Call Hold Interworking service between ISUP and SIP. The service converts an ISUP call hold to an SIP call hold, or vice-versa. Call holds are invoked by ISUP or SIP/H.323 endpoints. When disabled, call hold indications are dropped. `disable` (default) `enable`
`clearmodeForDataCalls`	Set flag to enable the clearmode function for data calls. `disable` – (default) If disabled for the SIP Egress call leg, legacy operation is signaled and payload type is assumed implicit (same on both sides). If disabled for the SIP Ingress call leg, legacy G.711 operation is accepted as well as Clearmode. `enable` – If enabled for the SIP Egress call leg, Clearmode is sent using dynamic payload type. If enabled for SIP Ingress call leg, only Clearmode data calls are accepted.
`contactTransparencyForIsFocusMediaTag`	Enable flag to transparently pass Contact header for all requests and responses in outgoing message when "isFocus" parameter is received in Contact header. `disable` (default) `enable` This flag is configurable from ePSX or external PSX.
`createPChargingVector`	Enable flag to create a new PCharging-Vector header in outgoing message for INVITE and REGISTER messages. The PCharging-Vector header is also supported in SUBSCRIBE, OPTIONS, NOTIFY, MESSAGE, PUBLISH and REFER messages when received from same direction as REGISTER message. The P-Charging-Vector header contains the ICID value, ICID Generated at value and orig-ioi value. The string for orig-ioi value can be configured at egress trunk group. `disable` (default) `enable`
`createPVisitedNetworkId`	Enable flag to allow Unable to show "metadata-from": No such page "_space_variables" acting as P-CSCF to insert a P-Visited-Network-ID Header in the egress REGISTER request with the P-Visited-Network-ID configured string. `disable` (default) `enable`
`createPathHeader`	Enable flag to create a new Path header in the outgoing REGISTER request. `disable` (default) `enable`
`createServiceRouteHeader`	Enable flag to create a new Service-Route header in the outgoing 200 OK response for REGISTER. `disable` (default) `enable`
`customizedSessionTimerBehavior`	When enabled, the remote peer expects customer-specific session timer behavior. When disabled, the remote peer expects the standard session timer behavior. `disable` (default) `enable`
`disableAlsoHeader`	Enable this flag to allow Unable to show "metadata-from": No such page "_space_variables" to ignore the Also header if received from the remote peer and Unable to show "metadata-from": No such page "_space_variables" does not send the Also header to the remote peer. When disabled, the Unable to show "metadata-from": No such page "_space_variables" uses the Also header for call forwarding as usual. `disable` (default) `enable`
`disableHostTranslation`	Use this flag to enable/disable host name translation. This applies to all URL style headers that require transparency and defines the processing that SBC is to apply to the host name portion of these headers before forwarding. `disable` (default) `enable`
`disableMediaLockDown`	Enable this flag to allow Unable to show "metadata-from": No such page "_space_variables" to disable media lock-down by not sending SIP Re-INVITE/UPDATE messages in the following scenarios: Multiple codecs are sent in the offer and multiple codecs (or their subsets) are received in the answer, and the call becomes transcoded. Multiple codecs are sent in the offer and a single codec is received in the response. Multiple codecs are sent in the offer and a single codec with codec attributes is received in the response. If the result is a pass-through codec, and the most preferred codec in the answer (first codec in the list) is same as the selected codec, the Unable to show "metadata-from": No such page "_space_variables" disables media lock-down by not informing the egress peer using a re-INVITE. If the Unable to show "metadata-from": No such page "_space_variables" offers both pass-through and transcoding codecs, the `minimizeRelayingOfMediaChangesFromOtherCallLegAll` flag effectively suppresses the re-INVITEs to peers when the peer answers with a single codec. However, if the peer has multiple codecs, the `minimizeRelayingOfMediaChangesFromOtherCallLegAll` flag in certain situations cannot suppress the re-INVITEs as a change in one of the common codecs is detected. In these situations, if the Unable to show "metadata-from": No such page "_space_variables" ’s most preferred codec matches the peer's most preferred codec, enable the `disableMediaLockDown` flag to suppress this Modify Offer initiated by the Unable to show "metadata-from": No such page "_space_variables" to lock down the codec. If this flag is disabled, the Unable to show "metadata-from": No such page "_space_variables" sends a modify offer to lock down the codec. `disable` (default) `enable`
`disableReferToUriParameters`	By default, this flag is disabled thereby allowing parameters in the SIP URI Refer-To header to pass through to the outgoing INVITE URI. Enable this flag to prevent the parameters from passing through. `disable` (default) `enable`
`discardReceivedReasonHeader`	Enable flag to ignore cause code in received Reason header. When disabled, the Unable to show "metadata-from": No such page "_space_variables" uses the cause code in the received Reason header. `disable` (default) `enable`
`doNotIncludeSsAttributeInReInvite`	Enable flag to prevent Unable to show "metadata-from": No such page "_space_variables" from sending silence suppression (no a=silenceSupp is sent) in the SDP to the remote peer. When disabled, and when silence suppression is off, the Unable to show "metadata-from": No such page "_space_variables" sends a=silenceSupp:offin the SDP to the remote peer. `disable` (default) `enable` a=silenceSupp:on is never sent to remote peer in current implementation when silence suppression is on.
`enableDefaultPUIProcedures`	Enable this flag to allow default PUI procedures on egress trunk group. Note that the Privacy 'Transparency' flag must be disabled to allow this feature. `disable` (default) `enable`
`enableDialStringHandling`	This flag is primarily used to enable/disable transparency of dial string (i.e username) received in request URI of INVITE message. Transparency does not occur, however, if PSX/ERE returns globalized or non-private called address. SBC performs dial string identification based on RFC 4967. `disable` (default) `enable`
`endToEndBye`	For SIP-to-SIP calls, enable flag to prevent Unable to show "metadata-from": No such page "_space_variables" from issuing the 200 BYE on the side initiating the disconnect until the 200 BYE is received from the other leg. When disabled, the Unable to show "metadata-from": No such page "_space_variables" issues the 200 BYE on the side initiating the disconnect regardless of whether a 200 BYE is received from the other leg. `disable` (default) `enable`
`fromHeaderAnonymisation`	Enable this flag to prevent the FROM header of `INVITE` message from being anonymized. The SBC always relays the FROM header of `INVITE.` `disable` (default) `enable`
`includeIpPortsInFromAndToHeaders`	When enabled, port numbers are included with IP addresses in the From and To headers of SIP messages. When disabled, port numbers are not included with IP addresses. `disable` (default) `enable`
`includeReasonHeader`	When enabled, the Unable to show "metadata-from": No such page "_space_variables" includes the Reason header in 18x, 4xx, 5xx, Cancel, and Bye messages in the forward direction. It is provisioned on the egress trunk group. `disable` (default) `enable`
`includeSsAttributeInInitialInvite`	Enable this flag to send the 'a=silenceSupp:off' in the Initial Invite SDP to the remote peer when Silence Suppression is OFF. When disabled, 'a=silenceSupp' is not sent in the Initial Invite SDP to the remote peer. Note that 'a=silenceSupp:on' is never sent to the remote peer in the Sonus implementation when Silence Suppression is ON. `disable` (default) `enable`
`includeTransportTypeInContactHeader`	When Unable to show "metadata-from": No such page "_space_variables" is configured for PSX/ePSX, this flag is used by the PSX SIPE to control inclusion/exclusion of the Transport Type parameter in the Contact headers of 3XX responses. When enabled, the PSX SIPE includes the Transport Type parameter in the Contact headers of 3XX responses. When disabled, the PSX SIPE does not include the Transport Type parameter. When Unable to show "metadata-from": No such page "_space_variables" is configured for ERE, this flag is used by the Unable to show "metadata-from": No such page "_space_variables" to control inclusion/exclusion of the Transport Type parameter in the Contact headers of SIP requests and backward 2xx messages when the selected transport is not UDP. `disable` (default) `enable`
`insertPeerAddressAsTopRouteHeader`	When enabled, the Unable to show "metadata-from": No such page "_space_variables" SIPE inserts the IP address of the next hop in the top route header of the egress INVITE. This is required when the Unable to show "metadata-from": No such page "_space_variables" acts as a IMS BGCF proxy, and also supports SIPconnect compliance for direct inward dialing. `disable` (default) `enable`
`lockDownPreferredCodec`	Enable this flag to maintain the most preferred codec of the leg on which it is enabled even if it requires transcoding. This feature also suppresses the re-INVITE triggered on the leg (on which it is enabled from the SBC) due to a MODIFY offer received from the other leg as part of mid-call codec modification. `disable` (default) `enable` This flag must be enabled in conjunction with `minimizeRelayingOfMediaChangesFromOtherCallLegAll` flag. When this flag is enabled, the flag “`relayDataPathModeChangeFromOtherCallLeg`” must also be enabled to propagate HOLD Modify Offers (any modify offer that changes the data-path-mode).
`mapCauseLocation`	Enable this flag to add the cause location is added to or retrieved from the SIP Reason header when mapping ISUP-to-SIP or SIP-to-ISUP signaling (you must also enable the Include Reason Header function). ISUP (and other protocols) indicate where in the network a call release was initiated from; this option enables the SIP Reason header to carry the cause location as well as the cause value. When flag is disabled, cause location mapping is off. `disable` (default) `enable`
`mapSuspendResumeEventInPSvcInfoHeader`	Enable this flag to map the suspend/resume event in the P-Svc-Info header. When disabled, the Unable to show "metadata-from": No such page "_space_variables" does not map the suspend/resume event in the P-Svc-Info header. `disable` (default) `enable`
`mapUuiInPSigInfoHeader`	Enable this flag to map the UUI parameter into the SIP P-Sig-Info header. When disabled, the Unable to show "metadata-from": No such page "_space_variables" does not map or include the UUI parameter. `disable` (default) `enable`
`mimeCausePrecedeReasonHeaderCause`	When enabled, the cause value is mapped from the MIME body of the incoming message based on the Q.1912 standard. When disabled, the cause value is mapped from the Reason header based on the RFC3398 standard `disable` (default) `enable`
`minimizeRelayingOfMediaChangesFromOtherCallLegAll`	The advertised Sonus SIP SDP is described as a set of capabilities that the Unable to show "metadata-from": No such page "_space_variables" can receive. The Unable to show "metadata-from": No such page "_space_variables" by default issues a Modify Offer ( re-INVITE, UPDATE) whenever it detects a change in receive capabilities. In certain scenarios, the Modify Offer can be perceived as redundant. Enabling this flag suppresses redundant Modify offers being sent from the Unable to show "metadata-from": No such page "_space_variables" . When enabled, the SBC suppresses modify offers that have no changes to the “common codecs” that impact the end-user experience. “Common codecs” are codecs that exist both in the initial offer and answer (G711U in commonIpAttributes - SIP - CLI). Changes to common codecs imply changes to DTMF, packetization time, codec specific FMTP attributes and data-path-mode. `disable` (default) `enable`
`noContentDisposition`	The Content Disposition header format in SIP messages expected by the remote peer. When enabled, the remote peer expects no Content Disposition header. When disabled, remote peer expects the standard SIP message format which includes Content Disposition header. `disable` (default) `enable`
`noPortNumber5060`	Use this parameter to control whether port number 5060 is sent to the remote peer in the Request-URI of PRACK, ACK, and BYE messages. When enabled, the outgoing SIP URI does not include port number 5060 (sip:user@host). In addition, Unable to show "metadata-from": No such page "_space_variables" only sends out the Record-Route and Route headers of SIP request and response messages with the port number it receives, such that if the Unable to show "metadata-from": No such page "_space_variables" does not receive a port number in Record-Route headers, the Unable to show "metadata-from": No such page "_space_variables" does not send out a port number in the Record-Route and Route headers. When disabled, the outgoing SIP URI includes port number 5060 (sip:user@host:5060). In addition, if SBC does not receive a port number in Record-Route headers of SIP request and response messages, the Unable to show "metadata-from": No such page "_space_variables" inserts port number 5060 into the outgoing Record-Route and Route headers. `disable` (default) `enable` Enable this flag to allow DNS NAPTR/SRV lookups.
`noUserinfoInContactHeader`	When this flag is enabled, the remote peer expects no userinfo component in the Contact header URI. When disabled, the remote peer expects the standard format of the Contact header, which includes the userinfo component. `disable` (default) `enable`
`onlySelectedCodecInSessionRefresh`	When this flag is enabled, the SDP in a session keep-alive re-INVITE message will only include the currently-selected codec for the call. When disabled, the SDP in a session keep-alive re-INVITE message will be identical to that in the last offer. See example below. `disable` (default) `enable` Example: --> The SBC sends an INVITE including Codec-A and Codec-B <-- An 18x message is received identifying Codec-B. --> The SBC sends a keep-alive reINVITE depending upon the flag setting: `disable`: SBC sends keep-alive reINVITE with both Codec-A and Codec-B included `enable`: SBC sends keep-alive reINVITE including Codec-B The o-line of the SDP will be identical to that in the last offer.
`pCalledPartyIDSupport`	Enable flag to allow Unable to show "metadata-from": No such page "_space_variables" acting as P-CSCF to store pCalledPartyID header when a call destined to UE is received from IMS core network. Unable to show "metadata-from": No such page "_space_variables" inserts P-Asserted-Identity header in the 18x/2xx responses received from UE towards core and places the stored P-Called-Party-ID information in the PAI header. `disable` (default) `enable`
`pChgMsgInfo`	When enabled, the Unable to show "metadata-from": No such page "_space_variables" adds a P-ChgMsg header to a SIP INFO or a 183 Session Progress (which it selects depends on the call state). The P-ChgMsg header contains the interworked ISUP CHG with TLEC information. When disabled, this function is disabled. `disable` (default) `enable`
`publishIPInHoldSDP`	Enable flag to include the SBC's IP address in the SDP for hold. `disable` (default) `enable`
`reQueryPsxOnRegisterRefresh`	When enabled, the Unable to show "metadata-from": No such page "_space_variables" will re-query the Unable to show "metadata-from": No such page "_space_variables" when it receives a register refresh message, which may result in a new or updated result for the register relay. When disabled, the Unable to show "metadata-from": No such page "_space_variables" does not re-query the Unable to show "metadata-from": No such page "_space_variables" on a register refresh. This setting must be made on the ingress trunk group profile facing the registered endpoint. `disable` (default) `enable`
`rejectRefer`	When enabled, the Unable to show "metadata-from": No such page "_space_variables" rejects SIP REFER messages from the peer and responds with a 405 Method Not Allowed message. `disable` (default) `enable`
`replaceHostOnViaHeader`	Use flag to replace IP address of the top-most via header on the outgoing request with IP address or hostname present in the top-most via header received. `disable` (default) – SBC defaults to B2BUA behavior where the VIA header contains local SIP signaling address. `enable` – Replaces the IP address of via header on the initial outbound INVITE or REGISTER with the address received in the via header of the incoming request.
`relayDataPathModeChangeFromOtherCallLeg`	The `relayDataPathModeChangeFromOtherCallLeg` flag is only available when `minimizeRelayingOfMediaChangesFromOtherCallLegAll` is enabled. When this flag is enabled in conjunction with `minimizeRelayingOfMediaChangesFromOtherCallLegAll` flag,the HOLD modify offers (more specifically, any modify offer that changes the data-path-mode) are propagated. `disable` (default) `enable`
`restrictHistoryInfoHeader`	Enable this flag to restrict History InfoHeader Flag depending upon the Privacy header or Privacy URI. `disable` (default) `enable`
`routeUsingRecvdFqdn`	Enable flag to use the FQDN received in contact header of Refer-To/3xx for routing. `disable` (default) `enable`
`sdpOlineOnlyCompares`	When enabled, the SBC checks only the o-line when comparing SDPs. When disabled, the SBC checks the entire SDP body when comparing SDPs. `disable` (default) `enable`
`sendAllAllowedCodecsForLateMediaInviteOrReInvite`	The `sendAllAllowedCodecsForLateMediaInviteOrReInvite` flag controls the handling of audio codecs that the SBC offers in response to a late media INVITE or Re-INVITE without SDP for transcoded calls. When this flag is in disabled state for transcoded calls (default behavior), the SBC offers the codec used for transcoding on the leg. When this flag is in enabled state for transcoded calls, the SBC offers multiple codecs which include: The subset of the codecs that the associated peer supports. The transcoded codecs that the associated DSP channel supports which includes the codec currently used for transcoding. For pass-through calls, the SBC always offers a subset of the codecs advertised by the associated peer. The SBC Offer codec list is classified as a subset because the list applies the codec policy filters. See SDP Support for examples of the above behavior. Configuration options: `disable` (default) `enable`
`sendDirectMediaInfoInSdpAttribute`	Enable flag to send direct media information in the SDP attribute X-DMI. `disable` (default) `enable` The 'directMediaAllowed' flag must be disabled on the associated trunk group.
`sendOnlyPreferredCodec`	Enable this flag on Answer side to send a single preferred codec in an Answer for an Initial Offer or Re-Invite. Enable flag on Offer side to send the most preferred codec in a re-INVITE offer. When disabled, the SBC sends all possible pass-through codecs in the route Packet Service Profile when the call is answered. This flag is used primarily in pass-through cases where more than one pass-through codec is possible. When generating an answer, the SBC chooses the most preferred codec based on the ordered list created by Send Route Preference (SRP)/Honor Remote Preference (HRP). Note that when this flag is disabled SBC sends all possible pass-through codecs in the answer or the Route Packet Service Profile when generating a re-INVITE offer. For offers generated by the SBC, especially in HOLD/RESUME cases, only the most preferred codec is sent in a re-INVITE offer when this flag is enabled. `disable` (default) `enable`
`sendPtimeInSdp`	Enable flag to allow the SBC to send a=ptime in the SDP. `disable` (default) `enable`
`sendRtcpPortInSdp`	When enabled, Unable to show "metadata-from": No such page "_space_variables" adds the attribute,a=rtcp:<rtcpPort> to the audio and video m lines in the outgoing SDP (Rtcp port mentioned will be SBC RTP port + 1). `disable` (default) `enable`
`sessionTimerRefreshUpdate`	Enable flag to control session timer refresh method with SIP peers via UPDATE messages. When disabled, the Unable to show "metadata-from": No such page "_space_variables" sends INVITE messages. `disable` (default) `enable` This flag is only accessible when the flag "`minimizeRelayingOfMediaChangesFromOtherCallLegAll`" is set to "enable".
`setAcceptHeaderToApplicationSdpOnly`	Use flag to specify the Accept header format in SIP messages expected by the remote peer. When enabled, the remote peer receives a short Accept header format containing the application/SDP value only. When disabled, the remote peer receives the standard Accept header format containing all of the standard parameters. `disable` (default) `enable`
`setOlineDash`	Specifies the SDP O-Line format in the SDP of SIP messages expected by the remote peer. When enabled, the remote peer receives an O-Line format in which the username component is set to a "-" (dash). When disabled, the remote peer receives the standard O-Line format containing all of the O-Line parameters, including the username. `disable` (default) `enable`
`setSessionVersionZero`	Enable flag to set the session version to zero in the o-line of the outbound SDP. When disabled, the Unable to show "metadata-from": No such page "_space_variables" assigns a session version randomly. `disable` (default) `enable`
`setSlineDash`	Specifies the SDP S-Line format in the SDP of SIP messages expected by the remote peer. `disable` (default) – Remote peer receives standard S-Line format containing all of the S-Line parameters. `enable` – Remote peer receives a short S-Line format containing a dash only (s=-).
`skipPsxQueryForRefer`	Set flag to skip the ERE query for Refer flag. `disable` (default) `enable`
`storePChargingFuncAddr`	Set this flag to store the values received in the PCFA header in a request or response. The stored value is added to a subsequent response or a request based on the flag `addPChargingFuncAddr`. `disable` (default) `enable`
`storePChargingVector`	When this flag is enabled, the SBC stores the P-Charging-Vector (PCV) received in requests. When the response is forwarded back, the stored PCV is inserted and sent. If the SBC receives the PCV when this flag is disabled, the SBC ignores the PCV and does not log the CDR. `disable` (default) `enable` Example of SBC acting as IBCF: INVITE (PCV1) --> SBC --> INVITE 200 OK (PCV1) <-- SBC <-- 200 OK
`storePathHeader`	Set this flag to locally store (cache) a Path header received in an incoming REGISTER request. `disable` (default) `enable`
`storeServiceRouteHeader`	Set this flag to locally store (cache) a Service-Route header received in an incoming 200 OK response to REGISTER. `disable` (default) `enable`
`supportSCSCFRestorationProcedures`	SBC acting as P-CSCF rejects a request with 504 (Server Time-out) response carrying MIME body of type `application/3gpp-ims+xml`, if SBC does not receive any response to the request from S-CSCF network or the next hop address is blacklisted as part of ARS (Address Reachability Service) service (see IMS Restoration Procedures for addtional details). `disable` (default) `enable`
`suppressMinSeIfNotReceived`	Enable flag to add Min-SE header to re-INVITEs/UPDATEs only if it exists in the previous offer/answer. When this flag is disabled, Min-SE is always added to session refreshes. `disable` (default) `enable`
`terminalPortabilityInterworking`	Enable flag to provide a service between ISUP and SIP to move a terminal from one socket to another, or to move a call from one terminal to another while the call is active. `disable` (default) `enable`
`usePsxRouteforRegisteredInvite`	Enable flag to route `INVITE` from the core to the received PSX route for registered users, but not to the contact address of the RCB. `disable` (default) `enable`
`validateAccessNwInfoHeader`	Enable flag to prevent forwarding P-Access-Network-Info header when network-provided parameter is present. This flag is associated with Egress TG with respect to Request and Response message (Core Side). `disable` (default) `enable` This is applicable for both INVITE and non-INVITE message and their responses.

Option Tags

Option Tags

Parameter

Length/Range

Description

optionTagInRequireHeader

N/A

Use this control to suppress REPLACE tag in the Require header.
If the Replaces header is present in a received SIP REFER request, the

Unable to show "metadata-from": No such page "_space_variables"

includes the contents of the Replaces header (callID, From Tag and To Tag) in the outgoing INVITE without a full ERE query. This enables one

Unable to show "metadata-from": No such page "_space_variables"

to transfer two independent calls and connect them together using IP trunk group (IPTG) routing. IPTG routing must be enabled for this feature.

suppressReplaceTag – Controls the content in Require headers to be sent to the peer. When enabled, the REPLACE tag is suppressed in the Require header. If disabled, the REPLACE tag is included in the Require header.
- disable (default)
- enable

optionTagInSupportedHeader

N/A

Use this control to suppress the REPLACE tag in the Supported header.
If the Replaces header is present in a received SIP REFER request, the

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includes the contents of the Supported header (call ID, From Tag and To Tag) in the outgoing INVITE, OPTIONS, and INVITE/OPTIONS without a full ERE query. This enables one

Unable to show "metadata-from": No such page "_space_variables"

to transfer two independent calls and connect them together using IP trunk group (IPTG) routing. IPTG routing must be enabled for this feature. This control suppresses this feature.

suppressReplaceTag – Controls the content in Supported headers to be sent to the peer. When enabled, the REPLACE tag is suppressed in the Supported header. If disabled, the REPLACE tag is included in the Supported header.
- disable (default)
- enable

Relay Flags

For a list of SIP headers that cannot be controlled using relay flags in relay scenarios, see Relay Flags.

Relay Flags

Parameter	Length/Range	Description
`conferenceEventPackage`	N/A	Enable to relay conference event xml message body (application/conference-info+xml body ) to the peer. `disable` (default) `enable` To pass this body transparently, enable the `conference-info` xml body relay flag.
`dialogEventPackage`	N/A	Enable this flag to allow Unable to show "metadata-from": No such page "_space_variables" to send the Dialog Event Package to the peer. `disable` (default) `enable` This flag only applies to unregistered users.
`dtmfBody`	N/A	Enable flag to allow Unable to show "metadata-from": No such page "_space_variables" to relay DTMF body to the peer for responses to INVITE and BYE messages, relayed INFO, REFER, NOTIFY, OPTIONS, SUBSCRIBE request messages, and relayed 3xx, 4xx, 5xx, and 6xx in response to INVITE messages. Provision this flag on the ingress leg with respect to the message direction. `disable` (default) `enable`
`force503to500Relay`	N/A	Enable flag to force 503 Service Unavailable message to map to 500 Internal Server Error message. `disable` (default) `enable`
`info`	N/A	Enable to relay SIP INFO method to the peer. If disabled, the Unable to show "metadata-from": No such page "_space_variables" processes SIP INFO methods locally. `disable` (default) `enable`
`message`	N/A	Enable to relay SIP MESSAGE method to the peer. If disabled, the Unable to show "metadata-from": No such page "_space_variables" processes SIP MESSAGE methods locally. `disable` (default) `enable`
`notify`	N/A	Enable this flag to relay SIP NOTIFY method to the peer. If disabled, the Unable to show "metadata-from": No such page "_space_variables" processes SIP NOTIFY methods locally. `disable` (default) `enable`
`options`	N/A	Enable this flag to relay SIP OPTIONS method to the peer. If disabled, the Unable to show "metadata-from": No such page "_space_variables" processes SIP OPTIONS methods locally. `disable` (default) `enable`
`publish`	N/A	Controls the transfer of instant messages (IMs). Enable flag to allow Unable to show "metadata-from": No such page "_space_variables" to relay SIP PUBLISH methods to the peer. When disabled, the Unable to show "metadata-from": No such page "_space_variables" processes SIP PUBLISH methods locally. Provision this flag on the ingress leg with respect to the message direction. `disable` (default) `enable`
`refer`	N/A	When enabled, the Unable to show "metadata-from": No such page "_space_variables" relays SIP REFER methods to the peer. When disabled, the Unable to show "metadata-from": No such page "_space_variables" processes SIP REFER methods locally. `disable` (default) `enable`
`referToHeaderRelay`	N/A	Use this flag to relay the replaces in refer-To header of relayed REFER request. The options are: `rejectReferIfnoMatchForcallId` (default) – If no match is found for the call-Id received, the REFER is rejected. `relayReferIfNoMatchForCallId` – The SBC tries to match the received call-Id. If a match is found, the SBC translates the replaces header and relays the REFER message. If no match is found for call-id, the SBC relays the replaces without any changes. `relayReferWithoutMatching` – The SBC always relays the replaces in refer-to without searching for match of call-id.
`regEventPackage`		Enable this flag to relay Registration Event Package information to the peer. If disabled, the Unable to show "metadata-from": No such page "_space_variables" rejects the Registration Event Package. `disable` (default) `enable`
`sonusMediaBody`	N/A	Enable this flag to relay Sonus media body to the peer for responses to INVITE and BYE messages, relayed INFO, REFER, NOTIFY, OPTIONS, SUBSCRIBE request messages and relayed 3xx, 4xx, 5xx, and 6xx in response to INVITE messages. Provision this flag on the ingress leg with respect to the message direction. `disable` (default) `enable`
`statusCode3xx`	N/A	Enable this flag to relay 3xx status code to the peer in response to INVITE requests. Provision this flag on the trunk group that receives the 3xx response (the egress leg of the call). `disable` (default) `enable`
`statusCode4xx6xx`	N/A	Enable this flag to relay the error status codes (4xx, 5xx, or 6xx) in response to initial INVITE requests (does not apply to re-INVITEs). Provision this flag on the trunk group that receives the error response (the egress leg of the call). `disable` (default) `enable` You must enable this flag when using `authcodeHeaders` transparency flag.
`thirdPartyBodies`	N/A	Enable this flag to relay third party bodies to the peer in response to INVITE and BYE messages, relayed INFO, REFER, MESSAGE, NOTIFY, OPTIONS, SUBSCRIBE request methods and relayed 3xx, 4xx, 5xx, and 6xx responses to INVITE methods. Provision this flag on the ingress leg with respect to the message direction. `disable` (default) `enable`
`updateWithoutSdp`	N/A	Enable this flag to relay UPDATE message without SDP. `disable` (default) `enable`

Subscription Package Support Flags

Subscription Package Support Flags

Parameter

Description

subscriptionPackageSupport

Use this object to configure subscription support package.

supportRegEvent – Enable flag to allow SBC to subscribe to reg-event package for obtaining updates on registration status when the registration from the user is successful.
- disable (default)
- enable

The flag usePSXRouteForSBCInitiatedSubscribe is currently visible in CLI under subscriptionPackageSupport object as well, but it is not supported.

Transparency Flags

For a list of SIP headers that cannot be controlled using transparency flags in relay scenarios, see IPSP Transparency Flags.

Transparency Flags

Parameter	Length/Range	Description
`acceptContactHeader`	N/A	Set flag to allow P-CSCF to transparently pass the received Accept-Contact Header. `disable` (default) `enable`
`acceptHeader`	N/A	Use this flag to determine Accept header behavior. `disable` (default) – Accept header includes: application/sdp, application/isup, application/dtmf, application/dtmf-relay, multipart/mixed information. `enable` – Accept header is transparently passed from ingress to egress.
`acceptLanguageHeader`	N/A	Enable to allow Accept-Language Header transparency. `disable` (default) `enable`
`alertInformationHeader`	N/A	Set this flag to transparently copy the ALERT INFO header from the ingress SIP INVITE method to the egress SIP INVITE message. `disable` (default) `enable`
`authcodeHeaders`	N/A	Enable this flag to transparently copy the WWW Authentication header for SIP 401/407 response messages or SIP Authorization/Proxy Authorization headers. `disable` (default) `enable` You must enable `statusCode4xx6xx` relay flag when using `authcodeHeaders` transparency.
`callInfoHeader`	N/A	Set flag to transparently pass Call-Info header, if present, in the incoming message. `disable` (default) `enable`
`contactHeader`	N/A	Set flag to transparently pass the Contact Header Flag in egress leg with respect to the message direction. `disable` (default) `enable`
`errorInfo`	N/A	Enable this flag to transparently copy the Error-Info header from the ingress leg to the egress leg. `disable` (default) `enable`
`externalBody`	N/A	Enable to send message/external-body transparently. `disable` (default) `enable`
`fromHeader`	N/A	Enable this flag to transparently copy the userinfo@host component of the FROM header from the ingress SIP INVITE message to the egress SIP INVITE message. `disable` (default) `enable` Even when this flag is enabled, the IP port information is not included unless the "Include IP Ports in From and To Headers" flag, elsewhere in this IP Signaling Profile, is also enabled.
`geolocation`	N/A	Set flag to transparently pass Geolocation header, if present, in incoming message. `disable` (default) `enable`
`geolocationError`	N/A	Set flag to transparently pass Geolocation-Error header, if present, in incoming message. `disable` (default) `enable`
`geolocationRouting`	N/A	Set flag to transparently pass Geolocation-Routing header, if present, in incoming message. `disable` (default) `enable`
`historyInfo`	N/A	Controls History-info header transparency in SIP INVITE messages. When enabled, the Unable to show "metadata-from": No such page "_space_variables" passes the History-Info header transparently from the ingress message to the egress message. When disabled, the SBC does not copy the history-info. Provision this flag on the egress leg with respect to the message direction. `disable` (default) `enable`
`maxForwardsHeader`	N/A	Enable this flag to decrement the value in Max-Forwards header by 1 for requests traversing through the SBC. By default (disable), the SBC populates the Max-Forwards header with the value configured in maxFwdsDefault (default value is 70). `disable` (default) `enable`
`messageExternalBody`	N/A	Enable flag to pass Message External Body transparently. `disable` (default) `enable`
`mwiBody`	N/A	Enable flag to transparently copy the MWI body from the incoming message to the outgoing message for INVITE, REGISTER, BYE, INFO, OPTIONS, NOTIFY, REFER, and SUBSCRIBE. Provision this flag on the egress leg with respect to message direction. `disable` (default) `enable`
`pAccessNetworkInfoHeader`	N/A	Enable flag to transparently pass the p-Access-Network-Info (PANI) header from ingress to egress. `disable` (default) – Unable to show "metadata-from": No such page "_space_variables" suppresses the PANI header towards egress messages when the incoming message contains PANI header. `enable` – Unable to show "metadata-from": No such page "_space_variables" transparently passes PANI header from ingress to egress. Enable this flag when Unable to show "metadata-from": No such page "_space_variables" is configured as P-CSCF node.
`pCalledPartyID`	N/A	Set flag to transparently pass the P-Called-Party-ID header from ingress to egress call leg. `disable` (default) `enable`
`pChargingVectorHeader`	N/A	When enabled, the Unable to show "metadata-from": No such page "_space_variables" transparently copies the P-Charging-Vector header from the ingress message to the egress message. When disabled, the Unable to show "metadata-from": No such page "_space_variables" does not copy the header. PCharging- Vector header transparency is supported in INVITE, REGISTER, SUBSCRIBE, OPTIONS, MESSAGE, PUBLISH, NOTIFY, REFER, and INFO messages. `disable` (default) `enable`
`pEarlyMedia`	N/A	Controls P-Early Media header transparency in INVITE or non-100 RESPONSE requests and their responses if they are relayed. When enabled, the SBC transparently copies the P-Early Media header from the incoming message to the outgoing message. When disabled, the PEarly- Media header is not copied to the egress leg. Provision this flag on egress leg with respect to message direction. `disable` (default) `enable`
`pidfBody`	N/A	Enable to send application/pidf+xml body transparently. `disable` (default) `enable`
`pidfDiffBody`	N/A	Enable to send application/pidf-diff+xml body transparently. `disable` (default) `enable`
`pVisitedNetworkIDHeader`	N/A	Enable flag to pass the P-Visited-Network-ID header transparently to the egress leg. `disable` (default) `enable`
`passCompleteContactHeader`	N/A	Enable flag at egress IPSP (with respect to message direction) to copy the Contact header and its parameters from the ingress message and insert in the egress message. `disable` (default) `enable`
`pathHeader`	N/A	Enable flag to transparently copy the Path header from the ingress SIP message to the egress SIP message. `disable` (default) `enable`
`qsigBody`	N/A	Enable flag to transparently copy the QSIG body from the incoming message to the outgoing message for INVITE, REGISTER, BYE, INFO, OPTIONS, NOTIFY, REFER, and SUBSCRIBE. Provision this flag on the egress leg with respect to message direction. `disable` (default) `enable`
`reasonHeader`	N/A	When enabled, the ingress Reason header value is passed through unchanged. `disable` (default) `enable`
`referredByHeader`	N/A	When enabled, Unable to show "metadata-from": No such page "_space_variables" transparently copies the Referred-By Header (in INVITE requests/responses) from the incoming message to the outgoing message. When cleared, the Referred-By Header is not copied. Provision this flag on the egress leg (with respect to the message direction). `disable` (default) `enable`
`requestURI`	N/A	Enable flag to transparently copy the Request URI from the incoming message to the outgoing message for INVITE, REGISTER, SUBSCRIBE/NOTIFY. Provision this flag on the egress leg (with respect to the message direction). `disable` (default) `enable`
`resourceListBody`	N/A	Enable to send application/resource-lists+xml body transparently. `disable` (default) `enable`
`resourcePriorityOptionTag`	N/A	Enable to transparently pass 'resource-priority' option tag received in Require or Supported header of SIP messages. `disable` (default) `enable`
`rlmiBody`	N/A	Enable to send application/rlmi+xml transparently. `disable` (default) `enable`
`routeHeader`	N/A	Enable flag to transparently copy the Route header from the ingress SIP message to the egress SIP message. `disable` (default) `enable`
`serverHeader`	N/A	Enable to allow Server Header transparency. `disable` (default) `enable`
`serviceRouteHeader`	N/A	Enable flag to transparently copy the Service-Route header from the ingress SIP message to the egress SIP message. `disable` (default) `enable`
`simpleFilterBody`	N/A	Enable to send application/simple-filter+xml content-type transparently. `disable` (default) `enable`
`sipBody`	N/A	Enable flag to transparently copy the SIP body from the incoming message to the outgoing message for INVITE, REGISTER, BYE, INFO, OPTIONS, NOTIFY, REFER, and SUBSCRIBE, if relayed. Provision this flag on the egress leg with respect to the message direction. `disable` (default) `enable`
`sipfragBody`	N/A	Enable flag to transparently copy the SIPFRAG body from the incoming message to the outgoing message for INVITE, REGISTER, BYE, INFO, OPTIONS, NOTIFY, REFER, and SUBSCRIBE. Provision flag on the egress leg with respect to the message direction. `disable` (default) `enable`
`toHeader`	N/A	Enable flag to transparently copy the userinfo@host component of the TO header from the ingress SIP INVITE message to the egress SIP INVITE message. When flag is disabled, SBC generates its own TO header. `disable` (default) `enable` Even when this flag is enabled, the IP port information is not included unless the "Include IP Ports in From and To Headers" flag, elsewhere in this IP Signaling Profile, is also enabled.
`toneBody`	N/A	Enable flag to transparently copy the Tone body from the incoming message to the outgoing message for INVITE, REGISTER, BYE, INFO, OPTIONS, NOTIFY, REFER, and SUBSCRIBE. Provision flag on the egress leg with respect to the message direction. `disable` (default) `enable`
`unknownBody`	N/A	Enable flag to transparently copy the Unknown body from the incoming message to the outgoing message for INVITE, REGISTER, BYE, INFO, OPTIONS, NOTIFY, REFER, and SUBSCRIBE. Provision flag on the egress leg with respect to the message direction. `disable` (default) `enable`
`unknownHeader`	N/A	Enable flag to transparently copy the Unknown header from the incoming message to the outgoing message for INVITE, REGISTER, BYE, INFO, OPTIONS, NOTIFY, REFER, and SUBSCRIBE. Provision flag on the egress leg with respect to the message direction. `disable` (default) `enable`
`userAgentHeader`	N/A	Enable to allow User-Agent header transparency. `disable` (default) `enable`
`userToUserHeader`	N/A	When the ingress INVITE contains the User-to-User header and this transparency flag is enabled, the User-to-User header passes through to the egress. `disable` (default) `enable`
`viaHeader`	N/A	Use this flag to specify the behavior of VIA header, the source address of the call originator. `disable` – (default) Default behavior where IP address on the VIA header is the local SIP signaling address. `enable` – Transparently pass all the VIA headers received in original INVITE or REGISTER. With only the transparency flag enabled, the SBC will still include the local SIP signaling address and port as the top most VIA header.
`warningHeader`	N/A	Enable to allow Warning Header transparency. `disable` (default) `enable`
`watcherInfoBody`	N/A	Enable to send application/watcherinfo+xml transparently. `disable` (default) `enable`

Command Example

From system-level prompt, use following command to view IP signaling profile flags for DEFAULT_SIP profile in table format.

 > show table profiles signaling ipSignalingProfile DEFAULT_SIP egressIpAttributes flags 
bgcfTargetSchemeTransparency disable; 
convertInactiveToSendrecv disable; 
disable2806Compliance disable; 
disableOptionalRegisterParameters disable; 
map181Or182MessageTo183 disable; 
mapContractorNumberInPSigInfoHeader disable; 
suppressUnregister disable; 
ttcIsupMapping disable; 
useCalledPartyInRequestUri disable; 
useColonInSdpMediaTypeParameter disable; 
validateIsubAddress disable; 
qosBasedRouting disable;

Call Flow Examples

Call Flow Examples for 'Disable Media Lockdown' Flag

Example1:

In the following call flow, the Modify Offers (in green) are suppressed if the Minimize Relaying Of Media Changes From Other Call Leg flag is enabled:

Ingress Peer		SBC		Egress Peer
G711U	->	SBC offers G711U as pass-through codec and G729A as a transcode option by reserving a DSP channel	->	G711U,G729A
G711U	<-	SBC releases the DSP channel resulting in a G711U pass-thru call	<-	G711U
		Receive capabilities of SBC have changed as a codec G729A was removed and the DSP channel de-allocated. Default behavior is to send Modify Offer; to suppress, the `Minimize Relaying Of Media Changes From Other Call Leg` flag should be enabled	->	G711U
			<-	G711U

Example 2:

The messages (in green) can be suppressed if the Disable Media Lock Down field is enabled.

Ingress Peer		SBC		Egress Peer
G711U	->	SBC offers G711U as pass-through codec and G729A as a transcode option by reserving a DSP channel	->	G711U,G729A
G711U	<-	SBC releases the DSP channel resulting in a G711U pass-thru call	<-	G711U,G729A
		Receive capabilities of SBC have changed as a codec G729A was removed and the DSP channel de-allocated. Default behavior is to send Modify Offer; the `Minimize Relaying Of Media Changes From Other Call Leg` flag cannot suppress this Modify Offer as a common codec in the original offer and answer (G729A) has been removed; To suppress this re-INVITE, enable DML	->	G711U
			<-	G711U

Ingress Peer		SBC		Egress Peer
G711U	->	SBC offers G711U as pass-through codec and G729A,G726 as transcode options by reserving a DSP channel	->	G711U,G729A,G726
G711U	<-	Transcode G711-G729A call. Egress codec is locked down to G729A	<-	G729A,G726
		Receive capabilities of SBC have changed to G729A due to transcode. Default behavior is to send Modify Offer to lockdown to G729A; the `Minimize Relaying Of Media Changes From Other Call Leg` flag cannot suppress this Modify Offer as a common codec in the original offer and answer (G726) has been removed; To suppress this re-INVITE, enable DML	->	G729A
			<-	G729A

Example 3:

Scenario in which Disable Media Lockdown field can not suppress the media lock down messages (in green).

The codecs configured at Egress route PSP are G711U, G726, G729A with HRP disabled.

Ingress Peer		SBC		Egress Peer
G711U	->	SBC offers G711U as pass-through codec and G726,G729A as transcode options by reserving a DSP channel	->	G711U,G726,G729A
G711U	<-	Transcode G711-G726 call. Egress codec is locked down to G726	<-	G729A,G726
		Receive capabilities of SBC have changed to G726 ( i.e. HRP is disabled). Since, the codec selected by SBC is different from Peer’s preferred codec (G729), though the flag DML is enabled SBC sends a Modify Offer to lockdown to G726.	->	G726
			<-	G726

Call Flow Examples for 'Minimize relaying of Media Changes From Other Call Leg All' Flag

Example1:

The re-INVITEs (in green) are suppressed if the Minimize Relaying Of Media Changes From Other Call Leg flag is enabled.

Ingress Peer		SBC		Egress Peer
G711U	->	SBC offers G711U as pass-through codec and G729A as a transcode option by reserving a DSP channel	->	G711U,G729A
G711U	<-	SBC releases the DSP channel resulting in a G711U pass-thru call	<-	G711U
		Receive capabilities of SBC have changed as a codec G729A was removed; send Modify Offer to Peer to advertise the latest set of capabilities	->	G711U
			<-	G711U

Example2:

SBC suppresses a Modify Offer from the ingress peer. The offer changes the maxptime from 10 to 20ms. An increase in maxptime can be suppressed – a device that advertises a maxptime of 20ms can also receive 10ms packets.

Ingress Peer		SBC		Egress Peer
G711U 10ms	->		->	G711U 10ms
G711U	<-		<-	G711U
Re-INVITE (G711U 20ms)	->	Suppress the re-INVITE if minimize media is enabled and respond to ingress peer; else forward the re-INVITE to egress	->	G711U 20ms
G711U	<-		<-	G711U

Conversely, irrespective of the state of the Minimize Relaying Of Media Changes From Other Call Leg flag All field cannot suppress a change of maxptime from 20ms to 10ms.

Ingress Peer		SBC		Egress Peer
G711U 20ms	->		->	G711U 20ms
G711U	<-		<-	G711U
Re-INVITE (G711U 10ms)	->		->	G711U,10ms
G711U	<-		<-	G711U

Example3:

A change of data-path-mode from sendrecv to sendonly ( HOLD request) can also be suppressable. The rational is that SBC can always ignore the media received from the peer and continue to send it media.

Ingress Peer		SBC		Egress Peer
G711U sendrecv	->		<-	G711U sendrecv
G711U	<-		->	G711U
Re-INVITE (G711U sendonly)	->	Suppress the re-INVITE if minimize media is enabled and respond to ingress peer; else forward the re-INVITE to egress	<-	G711U sendonly
G711U	<-		->	G711U

Conversely, SBC irrespective of the state of the Minimize Relaying Of Media Changes From Other Call Leg flag, cannot suppress a change of data-path-mode from sendonly to sendrecv.

Ingress Peer		SBC		Egress Peer
G711U sendonly	->		->	G711U sendonly
G711U	<-		<-	G711U
Re-INVITE (G711U sendrecv)	->		->	G711U sendrecv
G711U	<-		<-	G711U

Call Flow Examples for 'Relay Data Path Mode Change From Other Call Leg' Flag

Example1:

When Minimize Relaying Of Media Changes From Other Call Leg flag is enabled, and when Relay Data Path Mode Change From Other Call Leg is disabled:

Ingress Peer		SBC		Egress Peer
G711U,G729A sendrecv	->		->	G711U,G729A sendrecv
G711U	<-		<-	G711U
Re-INVITE (G711U sendonly)	->	Suppress the re-INVITE and respond to ingress peer. Discard media received from the egress peer
G711U	<-

Example2:

When the Minimize Relaying Of Media Changes From Other Call Leg flag is enabled, and when Relay Data Path Mode Change From Other Call Leg is enabled:

Ingress Peer		SBC		Egress Peer
G711U,G729A sendrecv	->		->	G711U,G729A sendrecv
G711U	<-		<-	G711U
Re-INVITE (G711U sendonly)	->		->	G711U sendonly
G711U	<-		<-	G711U

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Call Flow Examples for 'Disable Media Lockdown' Flag

Call Flow Examples for 'Minimize relaying of Media Changes From Other Call Leg All' Flag

Call Flow Examples for 'Relay Data Path Mode Change From Other Call Leg' Flag