Asterisk 16 AMI - Atxfer command

Asterisk Asterisk APIs
1

I’ve been searching / testing various things for hours now, would love some help.

We are using a very customized (AGI heavy) system. We have asterisk, a python proxy for handling authentication (so we can use our windows accounts), MicroSIP, and a custom desktop app for controlling the status.

The new feature I am working on will allow an agent who is currently on a call to hit a button, pull up a list of other agents within their team (we have tenant separation so we can run many call centers on one system), select a specific agent, and transfer the call to that person.

I have managed to get Action: Redirect to work, I fed it the context / extension, then just as a test hard coded my sip address into the dialplan. Works, but it immediately hangs up on the first agent, I’d love some kind of handoff.

I switched to using Atxfer action, with the same context and extension, and… nothing happens at all.
Action: Atxfer
Channel: SIP/
Context: agent_transfer
Exten: 1
Priority: 1

dialplan (very basic, just for testing)
[agent_transfer]
exten => 1,1,Noop(Original Agent: $agent_id)
same => n,Dial(SIP/10.x.x.x:port)

As stated, if I switch to Action: Redirect, it works just fine. With Atxfer, absolutely nothing happens. I have manager debug on, and I see the command come through, it’s just… nothing.

I’m sure I’m missing something very simple, if anyone could please help me out.

2

If this has been redacted, please indicate that and the structure before redaction. If it hasn’t been redacted, it is missing two fields, chan_sip channel names are typically of the form SIP/<peername>-<instance number>

Asterisk 16 is in security fix only mode and only has about four months of that left. chan_sip is a lame duck and, effectively, unsupported It is no longer in the master branch on GitHub.

3

It was indeed redacted (though, seems the forum redacted it even further than I had) - it is in the correct format.

As for 16 being in security fix mode only - I’m not looking to report a bug, I’m trying to understand how to properly use the Atxfer command. I’ve followed the documentation as best as I can, but there isn’t much at Asterisk 16 ManagerAction_Atxfer - Asterisk Project - Asterisk Project Wiki

4

you can also use this, where yout redirect channel1 til X and channel2 to Y

https://wiki.asterisk.org/wiki/display/AST/Asterisk+18+ManagerAction_Redirect

5 
Action: Atxfer
Channel: SIP/<sip channel id>
Context: agent_transfer
Exten: 1
Priority: 1
6

Atxfer works by actually pretending to do DTMF based attended transfer. It’s a blunt approach, which I would expect to also need the appropriate DTMF feature enabled.

7

Hm. Given how our system is setup, that is, our agents do not have extensions since they connect through a proxy (to asterisk, all agents are the same agent, we dial using IP:Port), I’m not sure that DTMF would work for our use case. I may need to explore doing some sort of Originate / Dial, then bridge.

8

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