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3.1.5.23.2 Clearing hold (retrieve)

In-order to clear the hold, or retrieve the call, the protocol client is required to do the following for all audio and video media streams in the resulting offer:

  • The client SHOULD<47> change the direction of all streams to "sendrecv".

  • The client SHOULD<48> exclude sip.rendering, as specified in [MS-SIPRE].