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The SIP to ISUP Interworking object gives the user the ability to manipulate the interworking of the ACM (Address Complete Message) and the CPG (Call Progress Message). The SIP_SS7 Interworking object supports manipulating the ACM and CPG messages for both RFC 3398 and Q.1912.5 (03/2004). Using the SIP_SS7 Interworking object a user can also force the ACM and CPG messages to be interworked into 180 Ringing unconditional or 183 Session Progress unconditional as well. Refer to call flow diagrams for high level interworking scenarios.
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IMG EMS > Profiles > SIP (SGP) Profile > New SIP_SS7 Interworking
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1 SIP_SS7 Interworking object Pane per SIP SGP object pane
Related Topics:
IMG 1010 - Configuring SS7 Signaling - 10.5.1
ClientView Pane: Software 10.5.3 SP5+
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By enabling the Hop Counter / Max Forward Interworking field, the IMG will now map the Hop Counter parameter in the IAM message to the Max Forward Header field in the SIP INVITE. Refer to IMG 1010 - Hop Counter / Max Forward Interworking topic for more information on how this feature functions.
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When a call is released on the SS7 side, information is then sent to the SIP side regarding why the call was released. The Diagnostic field information embedded in the SS7 REL message can be configured to be interworked into the reason-extension parameter of the SIP Reason Header's Field in the SIP BYE, CANCEL, 4xx, 5xx, 6xx messages. The selections below either enable or disable this functionality. Refer to the IMG 1010 - SS7 Diagnostic byte to Reason Header IW topic for more information on this feature.
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