no voice in callback

Feedback, issues & questions regarding the use of the Telis Wizard and Simple Wizard dial plans.
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ljmails
Posts: 3
Joined: Tue Jan 08, 2013 5:02 pm

no voice in callback

Post by ljmails » Sat Jan 19, 2013 4:55 pm

I try to use sys.callback("123456@provider", "234567@provider") to make callback, incoming call is fine, but just can't hear any ringtones, and when the other side pick up the phone, still no voice on the caller side.

I tried to use ideasip, pennytel, it both like this, when ideasip, both side no voice, when use pennytel, the callee can hear the caller's voice, but caller side can't hear anything.

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Aaron
Site Admin
Posts: 4555
Joined: Thu Jul 12, 2007 12:13 am

Re: no voice in callback

Post by Aaron » Sat Jan 19, 2013 10:02 pm

The Callback method relies on provider supporting a particular SIP mechansim called re-INVITEs and unfortunately not all of them do. Other people have had the same issue with different providers. The key to getting the Callback to work is trial and error with different providers or SIP devices to find a working combination.

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