Asterisk PHP-AGI - Transfer call using new INVITE and then REFER REPLACES

I have a php-agi script than handles incoming calls, plays back recordings, accepts input, etc.

I need to transfer the call to a different pbx (this pbx had originally sent the call to the Asterisk server) as an INVITE and then REFER/Replaces the old call with the new call.

This is not a straight transfer - a transfer only sends REFER - this does not work for us.

This new call needs to be sent via an INVITE - and then once the 2nd party answers, to REFER the previous call to the new call using Refer-To / REPLACES.

In addition, as the new call is being placed, I need to playback a recording to the caller (such as a please wait message or fake ringing tone or one of many different recordings.)

The new call will be placed to $Extension @ $Domain

The extension and domain the call will be transferred to will depend on the options selected by the caller.

Asterisk must not bridge the final connected call. Asterisk must remove itself from the call-flow once the call has been transferred.

The other pbx is currently setup under SIP and PJSIP with the same remote ip address.

We are using the Asterisk pbx as an auto-attendant only. Our main pbx will send calls to the asterisk pbx and expects the calls back as extension@[login to view URL]

CentOS 6.6

Asterisk 13.12.1

PHP 5.3.28

Skills: Asterisk PBX, Linux, MySQL, PHP, VoIP

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About the Employer:
( 0 reviews ) Cedarhurst, United States

Project ID: #16774025

15 freelancers are bidding on average $653 for this job


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