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The IMG 2020 supports both inbound and outbound delayed media. For information on inbound delayed media see SIP Delayed Media Inbound - 3PCC. SIP Delayed Media Outbound gives the IMG 2020 the ability to generate an outbound delayed media SIP call where the INVITE message generated does not contain an offer SDP. Negotiation will proceed once offer SDP is received from a far end provisional response or in final response. The IMG 2020 will either pass, release, or cancel the call. Below are the three scenarios supported.
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