[Freeswitch-users] One-way audio issue with attended transfer

Brian Wiese brian.wiese.freeswitch at gmail.com
Thu Sep 8 00:23:24 MSD 2011


I just tried to transfer a call blindly as well and I had the same problem
as an attended transfer.  Just trying to keep everyone updated here on the


On Wed, Sep 7, 2011 at 12:50 PM, Brian Wiese <
brian.wiese.freeswitch at gmail.com> wrote:

> John:
> While I don't have the answer, I did want to write to say that I'm
> experiencing the same problem.  We just built this server about a week ago,
> and I'm running this version:  FreeSWITCH Version 1.0.head (git-a966c2b
> 2011-09-04 11-09-23 -0500)
> If I can figure out what's going on I'll certainly post back here!
> ~Brian
>   On Tue, Sep 6, 2011 at 11:01 PM, John Platts <john_platts at hotmail.com>wrote:
>> We have been experiencing a one-way audio issue with attended transfer.
>> The problem is that after an call is transferred through an attended
>> transfer, the caller cannot be heard, but the caller can hear the voice of
>> the person that the call is transferred to.
>> Steps to reproduce the problem:
>> 1. Dial into FreeSWITCH from an external phone.
>> 2. Answer the call. One-way audio is not experienced here.
>> 3. Press the Transfer button on the IP phone to initiate an attended
>> transfer.
>> 4. Dial the extension that the call is to be transferred to.
>> 5. Allow the extension that the call is to be transferred to pick up the
>> call. One-way audio is not experienced here.
>> 6. Press the Transfer button to complete the transfer. The caller does
>> hear audio from the person that the call is transferred to, but the person
>> that the call is transferred to cannot hear the caller. The one way audio
>> issue is occurring here.
>> The attended transfer was performed from an extension on one SPA303 phone
>> to an extension on another SPA303 phone. FreeSWITCH actually detects that
>> the transfer is an attended transfer.
>> Here are attachments that I have uploaded to pastebin:
>> conf/dialplan/features.xml file: http://pastebin.freeswitch.org/17291
>> FreeSWITCH log, including the attended transfer:
>> http://pastebin.freeswitch.org/17286
>> How do we get this one-way audio issue fixed?
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>> http://www.freeswitch.org
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