13.20.4 Failure handling in MSC server

23.2053GPPBearer-independent circuit-switched core networkRelease 17Stage 2TS

If resources for the Voice group call service cannot be allocated in any of the MGW resources assigned to the MSC server (e.g. not enough conference terminations are available with cause "510 – Insufficient resources"), then the MSC server shall reject the VGCS request.