What is "Support 'Replaces' header" all about?

[coreybrett]

What is "Support 'Replaces' header" all about?

 

[leejor]

http://www.pjsip.org/pjsip/docs/html/group__PJSIP__REPLACES.htm

 

[SY]

Small addendum to leejor's post:
If device is configured as "Supports replaces"=off, PBX will not send requests with "Replaces" header to the device.

 

[coreybrett]

Examples of uses for the 'Replaces' header?

 

[leejor]

Did you read the link I posted? In the first line it says "The Session Initiation Protocol (SIP) "Replaces" Header, and can be used to enable a variety of features, for example: "Attended Transfer" and "Call Pickup".