Single Radio Voice Call Continuity (SRVCC) provides an interim solution for handing over VoLTE (Voice over LTE) to 2G/3G networks. The voice calls on LTE network are meant to be packet switched[1] calls which use IMS system to be made. To make it inter operable with existing networks, these calls are to be handed over to Circuit switched calls in GSM/WCDMA networks. QoS is ensured by SRVCC operators for calls made.

3GPP also standardized SRVCC to provide easy handovers from LTE network to GSM/UMTS network.

References

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  1. ^ Weik, Martin H. (2000), "Packet switching data network", Computer Science and Communications Dictionary, p. 1215, doi:10.1007/1-4020-0613-6_13465, ISBN 978-0-7923-8425-0