In this section:
Default values are enclosed in square brackets [ ].
The synchronization source (SSRC) identifier uniquely identifies media streams within an RTP session and is included in SDP signaling when establishing or modifying media sessions. The WebRTC specification requires that the SSRC value in an RTP stream match the SSRC sent in the SDP. However some endpoints, such as PSTN gateways, are not capable of generating SSRC values so they are not present in the SDP. Other endpoints change the SSRC during call hold/resume scenarios. The SBC provides two flag parameters to the Packet Service profile to determine whether the SBC generates and updates the SSRC and related attributes.
The SBC adds the following two flags to the Packet Service profile.
% set profiles media packetServiceProfile <profile name> flags generateAndSignalSSRCAndCname <disabled | enabled> allowMidCallSSRCModification <disabled | enabled>
The SBC only allows mid-call modifications to the SSRC if it is generating the SSRC. Therefore, the first parameter, generateAndSignalSSRCAndCname
, must be enabled for the second parameter, allowMidCallSSRCModification,
to become available.
Parameter | Description |
---|---|
| Enable this flag to generate an SSRC value and associated attributes and include them in SDP signaling and RTP/RTCP streams. Options are:
Note: This flag takes precedence over the Packet Service Profile |
| Enable this flag so that in call hold/resume scenarios the SBC modifies the SSRC and associated attributes after the call resumes. The SBC sends both the previous and updated SSRC in SDP signaling and includes the new SSRC iin RTP/RTCP streams. Options are:
Note: You must enable the Note: If you enable the IP Signaling profile common IP attributes flag |
The SBC provides the following new SIP trunk group parameter to specify whether to use the Contact header information instead of the source IP address when routing a call to an access user over TLS transport.
% set addressContext <address context> zone <zone> sipTrunkGroup <trunk group name> signaling honorContactInRegisterForTLSCalls <disabled | enabled> |
Parameter | Description |
---|---|
| Use this flag to specify where the SBC directs access calls from the internal network to users in the access network when the call is over TLS transport. The options are:
|
The SBC adds support for using SIP Message Manipulation (SMM) to enable secondary selection of an ingress trunk group. This processing requires two new SMM operations and SIP Param Based Action profiles.
The following new operations are supported in SMM sipAdaptorProfiles
.
% set profiles signaling sipAdaptorProfile <profileName> rule <rule index> action <action index> operation storeSipParam storeProfileName
The SIP Param Based Action profile is supported.
% set profiles signaling sipParamBasedActionProfile <profileName> action <none | selectTG> entry <0 to 2056> trunkGroupName <trunk group name> matchType full param <parameter value> none range rangeEnd <end of parameter range> rangeStart <start of parameter range> regexp paramRegexp <regular expression>
The following table describes the new SMM operations.
Parameter | Description |
---|---|
| SMM operation that extracts a specified value (header, parameter, token) from the incoming SIP message to compare to mapping defined in a |
| SMM operation that stores the name of a sipParamBasedActionProfile to use in selecting a new ingress trunk group. |
The following table describes the parameters in the sipParamBasedActionProfile
.
Parameter | Length/Range | Description |
---|---|---|
| up to 23 characters | Name for the |
| n/a | Action to be performed by the
|
| 0 to 2056 | Index value for the entry. A sipParamBasedActionProfile can contain a maximum of 2056 entries. |
| up to 23 characters | The name of the trunk group to set as the new ingress trunk group if the corresponding entry matches the value extracted with the SMM storeSipParam operation. |
| n/a | Type of matching to use when comparing the value extracted with the SMM
|
| up to 128 characters | Parameter value to compare against when matchType is full . More than one param value can be defined for an entry when matchType is full . |
| up to 128 characters | Ending value for a range to compare against when matchType is range . |
| up to 128 characters | Starting value for a range to compare against when matchType is range . |
| up to 128 characters | Regular expression to compare against when the matchType is regexp . |
The SBC adds support for applying SIP message manipulation (SMM) profiles (SIP adaptor profiles) at both the global and address context levels and options that control how to execute profiles when they are specified at more than one level.
The following new options specify the names of SIP adaptor profiles to apply at the global level.
% set global signaling messageManipulation inputAdapterProfile <profile name> outputAdapterProfile <profile name>
The following new options specify the names of SIP adaptor profiles to apply to sessions within a specified address context..
% set addressContext <address context> signaling messageManipulation inputAdapterProfile <profile name> outputAdapterProfile <profile name>
The following new options specify whether or not to use fixed order execution when multiple SMM profiles apply to a session. When fixed order execution is enabled, you can also specify which of the four profile types to enable and therefore include in SMM processing.
% set addressContext <address context> zone <zone> sipTrunkGroup <trunk group name> signaling messageManipulation smmProfileExecution none fixedOrder addressContext acState <disable | enable> global globalState <disable | enable> iptg iptgState <disable | enable> zone zoneState <disable | enable>
Parameter | Length/Range | Description |
---|---|---|
| 0-23 characters |
|
| 0-23 characters | <profile name> – Enter the name of a SIP adaptor profile to use globally on outbound messages. |
Parameter | Length/Range | Description |
---|---|---|
| 0-23 characters |
|
| 0-23 characters | <profile name> – Enter the name of a SIP adaptor profile to use for the address context on outbound messages. |
Parameter | Description |
---|---|
| Specifies whether or not to use fixed order processing when more than one SIP adaptor profile applies to messages in sessions associated with the specified SIP trunk group. The options are:
|
| Specifies whether the SBC executes the rules in the SIP adaptor profiles assigned at the address context level on messages in sessions associated with the specified SIP trunk group. The options are:
This option is only available after you set |
| Specifies whether the SBC executes the rules in the SIP adaptor profiles assigned at the global level on messages in sessions associated with the specified SIP trunk group. The options are:
This option is only available after you set |
| Specifies whether the SBC executes the rules in the SIP adaptor profiles assigned at the SIP trunk group level on messages in sessions associated with the specified SIP trunk group. The options are:
This option is only available after you set |
| Specifies whether the SBC executes the rules in the SIP adaptor profiles assigned at the zone level on messages in sessions associated with the specified SIP trunk group. The options are:
This option is only available after you set |