[asterisk-bugs] [JIRA] (ASTERISK-23703) PJSIP Testing: Nominal remote target attended transfers

[Matt Jordan (JIRA)]

Matt Jordan created ASTERISK-23703:
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             Summary: PJSIP Testing: Nominal remote target attended transfers
                 Key: ASTERISK-23703
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-23703
             Project: Asterisk
          Issue Type: Improvement
      Security Level: None
          Components: Resources/res_pjsip, Resources/res_pjsip_refer
            Reporter: Matt Jordan


h2. Remote Transfer Target

In a remote transfer target, the initial conversation between Alice and Bob takes place outside of Asterisk. Asterisk has a call established between Alice and Charlie, and then receives an INVITE request with Replaces to move the call between Bob and Charlie.

h3. Nominal - Channel Replacement

* Outside of Asterisk, Alice and Bob establish a dialog between each other
* Alice sends an INVITE request to Asterisk for Charlie. Asterisk sends an INVITE request to Charlie.
* Charlie sends a 200 OK to Asterisk, Asterisk sends a 200 OK to Alice.
* Alice sends a REFER request to Bob with a Replaces for the dialog between Asterisk and Alice
* Bob sends an INVITE with Replaces to Asterisk, specifying the dialog between Asterisk and Alice
* Asterisk sends a 200 OK to Bob, and places Bob in the bridge with Charlie
* Alice is hung up on by Bob and Asterisk, and Bob and Charlie are in a bridge together

h3. Application Replacement

* Outside of Asterisk, Alice and Bob establish a dialog between each other
* Alice sends an INVITE request to Asterisk to an extension with a long running application.
* Asterisk sends a 200 OK to Alice.
* Alice sends a REFER request to Bob with a Replaces for the dialog between Asterisk and Alice
* Bob sends an INVITE with Replaces to Asterisk, specifying the dialog between Asterisk and Alice
* Asterisk sends a 200 OK to Bob, and replaces Alice's channel with Bob's channel in the long running application
* Alice is hung up on by Bob and Asterisk, and Bob's channel survives in the long running application



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