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Audio Codec Change Through Empty Tcs

Enable flag to perform audio codec change (e.g. G.711 fax fallback) using empty Terminal Capability Set (TCS). When disabled,

 the

• Disable (default)
• Enable

This parameter is used to enable the clearmode function for data calls. When enabled, the SBC

enables clearmode. When disabled, the SBC

provides legacy G.711 behavior.

The options are:

• Disable (default)
• Enable

Set this flag to present a full TCS to its peer during call setup or media modification. When disabled,

the 

• Disable (default)
• Enable

Use this flag to control whether the H.323 Service Group includes G.729 along with G.729A in the network offer when the 

• Disable (default)
• Enable

Enable this flag to send an empty TCS to the peer to restart the peer’s forward channel if there is an address update in a direct media case.

• Disable (default)
• Enable

Controls Terminal Portability Interworking service between ISUP and SIP. When enabled, Terminal Portability Interworking service is enabled. When disabled, Terminal Portability Interworking service is disabled.  The service enables a terminal to be moved from one socket to another or a call to be moved from one terminal to another within one call while the call is active.

The options are:

• Disable (default)
• Enable

When enabled, the SBC adds the attribute,a=rtcp:<rtcpPort> to the audio and video m-lines in the outgoing SDP (RTCP port mentioned will be the SBC RTP port + 1). When disabled, the SBC does not add the attribute a=rtcp:<rtcpPort> to the audio and video m-line in the outgoing SDP.

The options are:

• Disable (default)
• Enable

Enable this flag to

allow the 

two Path headers in a REGISTER request towards the Core (SBC acting as P-CSCF or IBCF) (Create Service Path Header must be enabled) OR to add

two Service-Route headers in the 200 OK response

to a REGISTER towards the P-CSCF (SBC acting as IBCF) (Create Service Route Header must be enabled).

The options are:

• Disable (default)
• Enable

Specifies whether or not to add a P-Charging Function Address

header.

The options are:

• Disable (default)
• Enable

Controls the Call Hold Interworking service between ISUP and

SIP is enabled or disabled. 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.

The options are:

• Disable (default)
• Enable

This parameter is used to enable the clearmode function for data calls. When enabled, the

SBC enables clearmode. When disabled, the

SBC provides legacy G.711 behavior.

The options are:

• Disable (default)

• Enable

Controls whether or not a P-Charging-Vector header is created in outgoing SIP messages. Creating P-Charging-Vector headers is supported in INVITE and REGISTER messages. It is also supported in SUBSCRIBE, OPTIONS, and

NOTIFY messages when received from the same direction as the REGISTER message.

The options are:

• Disable (default)
• Enable

 Controls whether

or not the SBC creates a Path header in outgoing SIP

REGISTER messages.

The options are:

• Disable (default)
• Enable

 Controls whether or not the SBC creates a Service-Route header in outgoing SIP messages.

The options are:

• Disable (default)
• Enable

The options are:

• Disable (default)
• Enable

Specifies whether to use the Also header. When enabled, the

SBC ignores the Also header if received from the remote peer and the

SBC does not send the Also header to the remote peer. When disabled, the

SBC uses the Also header for call forwarding as usual.

The options are:

• Disable (default

• )
• Enable

Specifies whether to enable

or disable host name translation

. This applies to all URL style headers that require transparency and defines the processing that

the SBC is to apply to the host name portion of these headers before forwarding.

The options are:

• Disable (default)
• Enable

If the SBC offers both pass-thru and transcode codecs, the Minimize Relaying Of Media Changes From Other Call Leg flag effectively suppresses

Re-INVITEs to peers when the peer answers with a single codec. However, if the peer has multiple codecs,

the Minimize Relaying Of Media Changes From Other Call Leg flag in certain situations

cannot suppress the

Re-INVITEs

because change in one of the common codecs is detected. In these situations, if the SBC’s most preferred codec matches the peers most preferred codec, the Disable Media Lock Down flag can be used to suppress this Modify Offer. The Disable Media Lock

Down flag controls the

modified offer initiated by the SBC to lock down the codec. If this flag is disabled, the SBC sends

a modified offer to

lock down the codec

. If enabled, the SBC will not initiate

a modified offer to lock down the codec.

See examples following the table.

The options are:

• Disable (default)
• Enable

By default, parameters in the SIP URI Refer-To header are passed through to the outgoing INVITE. When this option is enabled, this

pass through does not occur. When disabled, the URI parameters are copied to the Refer-To field in the outgoing INVITE.

The options are:

• Disable (default)
• Enable

Specifies whether to use the cause code in the Reason header received from the remote peer. When enabled, the

SBC ignores the cause code in the received Reason header. When disabled, the

SBC uses the cause code in the received Reason header.

The options are:

• Disable (default)
• Enable

Specifies whether the

SBC sends silence suppression to the remote peer. When enabled, the

SBC does not send silence suppression (no a=silenceSupp is sent) in the SDP to the remote peer. When disabled, and when silence suppression is off, the

SBC sends a=silenceSupp:off in the SDP to the remote peer. Note that a=silenceSupp:on is never sent to the remote peer in the

The options are:

• Disable (default)
• Enable

Specifies whether or not to enable the Default PUI Procedure flag

.

The options are:

• Disable (default)
• Enable

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.

The options are:

• Disable (default)
• Enable

Controls whether the SBC will issue an end-to-end BYE on the side initiating the disconnect, depending on the receipt of a BYE from the other leg. When enabled, for SIP-SIP calls

, the SBC does not issue the 200 BYE on the side

initiating the disconnect until the 200 BYE is received from the other leg. When disabled, for SIP-SIP calls, the SBC issues the 200 BYE on the side initiating the disconnect regardless of whether a 200 BYE is received from the other leg.

The options are:

• Disable (default)
• Enable

When this flag is enabled, the SBC forwards Re-INVITEs received from one leg (with or without SDP) to the other leg.

The options are:

• Disable (default)
• Enable

When this flag is enabled, the SBC forwards UPDATEs (With SDP) received from one leg to the other leg.

The options are:

• Disable (default)
• Enable

When this flag is enabled, the SBC forwards the received reliable provisional response without generating a PRACK locally. It waits for the PRACK from the ingress peer to generate a PRACK towards egress peer.

The options are:

• Disable (default)
• Enable

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.

The options are:

• Disable (default)
• Enable

When enabled, the

SBC includes the Reason header in 18x, 4xx, 5xx, Cancel, and Bye messages in the forward direction. It is provisioned on the egress trunk group.

The options are:

• Disable (default)
• Enable

Specifies whether the

SBC sends the SS attribute in the initial Invite to the remote peer. When enabled, the a=silenceSupp:off is sent 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

The options are:

• Disable (default)
• Enable

This flag is used by

an SBC configured for an external PSX.

When this flag is enabled, the SBC includes the transport type parameter in the Contact headers of 3XX responses.

The PSX sends the value of this flag in a DIAMETER response to the SBC. When this flag is disabled, the SBC does not include the transport type parameter.

The options are:

• Disable (default)
• Enable

NOTE: Ensure the Pass Complete Contact Header flag is disabled (except for the REGISTER method) to obtain the desired behavior.

When enabled, the

SBC SIPE inserts the IP address of the next hop in the top

Route header of the egress INVITE. This is required when the

SBC is acting as

an IMS BGCF proxy. It is also used to support

SIPConnect compliance for direct inward dialing.

The options are:

• Disable (default)
• Enable

Specifies whether or not to enable the Map Cause Location flag

.

The options are:

• Disable (default

• )
• Enable

Controls whether

or not the SBC maps the suspend/resume event in the P-Svc-Info header of SIP messages.

The options are:

• Disable (default)
• Enable

Specifies whether

or not the SBC maps the UUI parameter and includes it in the SIP P-Sig-Info header.

The options are:

• Disable (default)
• Enable

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.

The options are:

• Disable (default)
• Enable

The advertised

SIP SDP is described as a set of capabilities that the SBC can receive. The SBC 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 Minimize Relaying Of Media Changes From Other Call Leg All flag suppresses redundant Modify

Offers being sent from the SBC.

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. Changes to common codecs imply changes to DTMF, packetization time, codec specific FMTP attributes and data-path-mode.

See examples following the table.

The options are:

• Disable (default)
• Enable

Specifies

whether including a Content Disposition header

in SIP messages is expected by the remote peer. When enabled, the remote peer expects no Content Disposition header. When disabled, the remote peer expects the standard SIP message format, which includes the Content Disposition header.

The options are:

• Disable (default)
• Enable

This parameter is used by

the SBC 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 the port number 5060 (sip:user@host). In addition, the

SBC only sends out port numbers in the Record-Route and Route headers of SIP request and response messages

if it receives

a port number in Record-Route headers

.  When disabled, the outgoing SIP URI includes the port number 5060 (sip:user@host:5060). In addition, if the

SBC does not receive a port number in the Record-Route headers of SIP request and response messages, the

SBC inserts the port number 5060

in outgoing Record-Route and Route headers.

The options are:

• Disable

• (default)
• Enable

Specifies

whether including userinfo in Contact headers in SIP messages is expected by the remote peer. When 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.

The options are:

• Disable

• (default)
• Enable

The options are:

• 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

Re-INVITE depending upon the flag setting:

• Disable: SBC sends keep-alive

• Re-INVITE with both Codec-A and Codec-B included

• Enable: SBC sends keep-alive

• Re-INVITE including Codec-B

Specifies whether or not to enable

P-Called

-Party-ID header support. 

The options are:

• Disable (default)
• Enable

The options are:

• Disable (default)
• Enable

 Enable this flag to include the SBC's IP address in the SDP on-hold. 

The options are:

• • Disable (default)
  • Enable

When enabled, the

SBC rejects SIP REFER messages from the peer and responds with a 405 Method Not Allowed message.

The options are:

• Enable

• Disable (default)

When enabled, the SBC will replace the IP address of the top-most

Via header in the initial outbound INVITE or REGISTER request with the IP address or hostname it received in the

top-most Via header of the incoming request. When disabled, the

SBC defaults to B2BUA behavior where the VIA header contains the local SIP signaling address.

The options are:

• Disable (default)
• Enable

Enable this flag to send the RR and RS bandwidth information, as well as "b=RR:" and "b=RS:" in the SDP offer.

The options are:

• Disable (default)

• Enable

When enabled, the

SBC will re-query the

PSX when it receives a

REGISTER refresh message, which may result in a new or updated result for the

REGISTER relay. When disabled, the

SBC does not re-query the

PSX on a

REGISTER refresh.  This setting must be made on the ingress trunk group profile facing the registered endpoint.

The options are:

• Disable (default)
• Enable

Specifies whether to forward the P-Access-Network-Info header when the network-provided parameter is present.

The options are:

• Disable (default)
• Enable

Specifies whether to restrict the HistoryInfo header, depending on the Privacy header or Privacy URI header parameter values.  

The options are:

• Disable (default)
• Enable

Enable this flag to use the FQDN received in

the Contact header of a Refer-To

or 3xx message for routing

.

The options are:

• Disable (default)
• Enable

When enabled, the

SBC checks only the o-line when comparing SDPs. When disabled, the

SBC checks the entire SDP body when comparing SDPs.

The options are:

• Disable (default)
• Enable

When enabled, the

SBC sends all allowed codecs in the

SDP offer in response to a late media

INVITE or Re-

INVITE. When disabled, the

SBC sends the codec selected in the Offer SDP in response to a late media

INVITE or Re-

INVITE.

The options are:

• Disable (default)
• Enable

The options are:

• Disable (default)
• Enable

 This parameter takes effect only when the trunk group parameter,

Direct Media Allowed, is disabled. When enabled, the

SBC sends a=ptime in the SDP. When disabled, the

SBC does not send a=ptime in the SDP.

The options are:

• Disable (default)
• Enable

This flag controls the session timer refresh method used with SIP peers. When enabled, the

SBC sends UPDATE messages. When disabled, the

SBC resends INVITE messages.

The options are:

• Disable (default)
• Enable

Specifies

whether including a short Accept header

in SIP messages is expected by the remote peer. When enabled, the remote peer expects a short Accept header format that contains the application/ SDP value only. When disabled, the remote peer expects the standard Accept header format containing all of the standard parameters.

The options are:

• Disable (default)
• Enable

Specifies

what SDP

o-

line format is expected by the remote peer. When enabled, the remote peer expects an

o-

line format in which the username component is set to a "-" (dash). When disabled, the remote peer expects the standard

o-

line format containing all of the

o-

line parameters, including the username.

The options are:

• Disable (default)
• Enable

Controls the session version used in

outbound SDP. When enabled, the

SBC sets the session version to zero in the o-line of the outbound SDP. When disabled, the

SBC assigns a session version randomly.

The options are:

• Disable (default)
• Enable

Specifies

what SDP

s-

line format is expected by the remote peer. When enabled, the remote peer expects a short

s-

line format that contains a dash only (s=-). When disabled, the remote peer expects the standard

s-

line format containing all of the

s-

line parameters.

The options are:

• Disable (default)
• Enable

Specifies whether to skip the PSX query for

REFER requests.

The options are:

• Disable (default)
• Enable

Controls whether a Path header received in an incoming SIP message

is stored/cached locally on the

SBC. When enabled, the received Path header is stored. When disabled, the received Path header is not stored.  

The options are:

• Disable (default)
• Enable

Controls whether a Service-Route header received in a 200-class response to a REGISTER request is stored/ cached locally on the SBC. When enabled, the received

Service-Route header is stored. When disabled, the

received Service-Route header is not stored.  

The options are:

• Disable (default)

• Enable

Controls whether

Terminal Portability Interworking service between ISUP and SIP is enabled. The service enables a terminal to be moved from one socket to another or a call to be moved from one terminal to another within one call while the call is active.

The options are:

• Disable (default)
• Enable

When this flag is enabled, the SBC 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). When disabled, the SBC does not add the attribute a=rtcp:<RTCPPort> to the audio and video m-line in the outgoing SDP.

The options are:

• Disable (default)
• Enable

Specifies whether or not to store the P-Charging-Function-Addresses header.

The options are:

• Disable (default)

• Enable

When this flag is enabled, the SBC stores the P-Charging-Vector (PCV) header it 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 it in the CDR.

The options are:

• Disable (default)
• Enable

Specifies whether or not to create the P-Visited-Network-ID header

.

The options are:

• Disable (default)

• Enable

Enable this flag to maintain using the most preferred codec of the leg on which it is enabled even if it requires transcoding. This feature also suppresses triggering a Re-INVITE 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.

The options are:

• Disable (default)
• Enable

Use this flag to have the SBC send a single preferred codec in an answer to an initial offer or Re-INVITE.

• Disable – When disabled, the SBC sends all possible pass-through codecs in the route's Packet Service Profile when the call is answered.
• Enable (default) – Enable the flag on the Answer side to send single preferred codec in the answer to an initial offer or Re-INVITE. Enable the flag on the Offer side to send the most preferred codec in a Re-INVITE offer.

 When this flag is enabled, the Min-SE header is added 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.

The options are:

• Disable (default)
• Enable

Enable this flag to route INVITEs from the core to the received PSX route for registered users, but not to the Contact address of the RCB.

The options are:

• Disable (default)
• Enable

Enable this flag to prevent the From header of INVITE messages from being anonymized. The SBC always relays the From header of INVITEs. 

The options are: 

• Disable (default)
• Enable

Enable this flag to stop the SBC from adding Service-Route headers for emergency registrations even if the Add Path Service Route and Create Service Route Header flags are enabled.

The options are:

• Disable (default)
• Enable

 Enable this flag to have the SBC construct and send a P-Access-Network-Info header using received location info.

The options are:

• Disable (default)
• Enable

Enable this flag to transparently pass the Contact header in outgoing messages when the "isFocus" parameter is received in the Contact header.

The options are:

• Disable (default)
• Enable

When enabled, the SBC, acting as P-CSCF, rejects a request with a 504 (Server Time-out) response that carries a MIME body of type application/3gpp-ims+xml, if the SBC does not receive any response to a request from the S-CSCF network or the next hop address is blacklisted as part of ARS (Address Reachability Service) service (see IMS Restoration Procedures for additional details).

The options are:

• Disable (default)
• Enable

 Enable this flag to

send a P-UE-Flow-Info header towards the core.

The options are:

• Disable (default)
• Enable

 Enable this flag to have the SBC process the URI specified in the Alert-info header received in a 180 Ringing message, and to use the tone specified in the Alert-Info header as the Local Ring Back Tone to play.

The options are:

• Disable (default)
• Enable

Use this flag is configure interworking between Alert-Info and P-Early Media headers. The options are:

• Disable (default)

•  - the SBC plays tones based on the LMSD format.
• Enable - the SBC plays tones based on the interworking between the Alert-Info and P-Early Media headers.

Enable this flag to have the SBC include all pass-through and transcodable codecs supported on that leg in the SDP offer sent in the 200 OK response to a late media Re-INVITE request.

The options are:

• Disable (default)
• Enable