Single Radio Voice Call Continuity (SRVCC) provides the ability to transition a voice call from the VoIP/IMS packet domain (LTE) to the legacy circuit domain. Variations of SRVCC are standardized to support both GSM/UMTS and CDMA 1x circuit domains. For an operator with a legacy cellular network, to deploy IMS/VoIP-based voice services in conjunction with the roll-out of an LTE network, SRVCC offers VoIP subscribers with coverage over a much larger area than would typically be available during the roll-out of a new network.
Srvcc parameter to configure SRVCC functionality. Zone - Srvcc is available to enable/disable EATF functionality for a zone.
To View and Edit Srvcc
From the EMA main screen, navigate to All > Global > Signaling > Srvcc. The Srvcc window is displayed.
The following fields are displayed:
|0 - 32||Request URI for a transfer call sent by MSC on PS to CS call handoff.|
|0 - 32||Request URI for a emergency transfer call sent by MSC on PS to CS call handoff.|
|0 - 63|
SIP URI to be used as the ATCF Path and Management URI.
|0 - 32|
Request URI for a PS to PS optimized handover call. To identify a PS to PS transfer call, the configured value is compared with the
The characters allowed in the Request URI for a PS to PS optimized handover call are as follows:
|1 - 32|
Number of seconds to wait for INVITE due to STN_SR before clearing the call.
Click Save, to save the changes.