13.6.2 Retrieval request

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

When the UE makes a request to retrieve a held call the MSC server requests the MGW to re-establish communication to the held party by changing the through-connection of the bearer termination towards the served mobile subscriber to be both-way through-connected or by using the Join Bearer Termination Procedure.