The replaces header is used in SIP call control applications. The Replaces header is used to logically replace an existing SIP dialog with a new SIP dialog. This can be used to enable a variety of features, for example: "Attended Transfer" and "Call Pickup". For some platforms, the behavior needs to be changed. We have seen the following issues where the setting needed to be changed. - Unattended transfer, the call is signaled as 2e incoming call.
- Group call pick-up
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