Tony,

Yes, and yes.


- Jeff


On Tue, Sep 25, 2012 at 12:26 PM, Tony Graziano <
[email protected]> wrote:

> Is the adtran setup as an unmanaged gateway and on the same network as
> sipx? If so that would be the correct configuration.
>
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> On Sep 25, 2012 12:16 PM, "Jeff Pyle" <[email protected]> wrote:
>
>> Joegen,
>>
>> Yes, exactly.  INVITE with no SDP.  I'll open a tracker shortly.
>>
>> In my configuration there is no NAT whatsoever.  Is there a way to
>> disable NAT traversal completely, thereby working around this issue for the
>> time being?
>>
>>
>> - Jeff
>>
>>
>>
>> On Tue, Sep 25, 2012 at 12:09 PM, Joegen Baclor <[email protected]>wrote:
>>
>>>  Jeff, good bug reporting!
>>>
>>> By late negotiation, do you mean INVITE with no SDP?  There is a known
>>> issue with NAT traversal plugin not being able to handle this properly.  If
>>> you don't mind, please open a tracker in jira and attach packet captures.
>>>
>>>
>>> On 09/25/2012 11:57 PM, Jeff Pyle wrote:
>>>
>>> Hello,
>>>
>>>  At the end of another 
>>> thread<http://list.sipfoundry.org/archive/sipx-users/msg41614.html>Tony 
>>> suggested I try attended transfers and some other parking related
>>> operations against an Adtran TA900-series gateway.  It seemed there had
>>> been some friction here in the past.
>>>
>>>  I was able to test attended and unattended transfers with sipX 4.6 on
>>> an Adtran TA908E.  The global config option "voice transfer-mode network"
>>> is required to support REFERs.  Without it the results will be undesirable.
>>>  With that line, however, unattended transfers worked just fine
>>>
>>>  Attended transfers yielded no audio when the transfer completed if the
>>> Adtran is the C-leg of the transfer.  Here's why:
>>>
>>>  This is the SDP of the INVITE with Replaces that arrives at the Adtran
>>> from sipX to wrap up the transfer:
>>>
>>>  v=0
>>>> o=- 1348230370 1348230370 IN IP4 172.21.201.60
>>>> s=Polycom IP Phone
>>>> c=IN IP4 172.21.201.60
>>>> t=0 0
>>>> a=sendrecv
>>>> m=audio 2250 RTP/AVP 9 0 8 18 101
>>>> a=rtpmap:9 G722/8000
>>>> a=rtpmap:0 PCMU/8000
>>>> a=rtpmap:8 PCMA/8000
>>>> a=rtpmap:18 G729/8000
>>>> a=fmtp:18 annexb=no
>>>> a=rtpmap:101 telephone-event/8000
>>>
>>>
>>>  This is correct, telling the Adtran to send audio to 172.21.201.60 (c=
>>> line) on port 2250 (m= line).  172.21.201.60 is the IP address of the
>>> Polycom who was the A-leg of the call.
>>>
>>>  As part of some DSP cleanup ops the Adtran starts a reINVITE
>>> transaction with late negotiation as soon as the above transaction is
>>> completed.  The offer SDP on sipX's 200 OK of that transaction looks like
>>> this:
>>>
>>>  v=0
>>>> o=- 1348230370 1348230371 IN IP4 172.21.201.60
>>>> s=Polycom IP Phone
>>>> c=IN IP4 172.21.201.60
>>>> t=0 0
>>>> m=audio 30248 RTP/AVP 9 0 8 18 101
>>>> c=IN IP4 192.168.54.46
>>>> a=rtpmap:9 G722/8000
>>>> a=rtpmap:0 PCMU/8000
>>>> a=rtpmap:8 PCMA/8000
>>>> a=rtpmap:18 G729/8000
>>>> a=fmtp:18 annexb=no
>>>> a=rtpmap:101 telephone-event/8000
>>>> a=x-sipx-ntap:X192.168.54.46-[PUBLIC-IP];54
>>>
>>>
>>>  Notice the c= and m= lines have changed.  sipX is now telling the
>>> Adtran to send audio to 192.168.54.46, the IP address of the sipX instance
>>> itself. This is why the A-leg Polycom at 172.21.201.60 doesn't receive any
>>> audio after the transfer - sipX told the Adtran to send the audio elsewhere.
>>>
>>>  Any idea why sipX might do that?
>>>
>>>  As a bandaid, one can prevent the Adtran from sending the reINVITE by
>>> adding "no prefer reinvite-without-sdp" to the voice trunk configured to
>>> talk to sipX.  This command is available only in prerelease code at the
>>> moment.  I believe it will be GA by the end of the month.
>>>
>>>
>>>  - Jeff
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> sipx-users mailing [email protected]
>>> List Archive: http://list.sipfoundry.org/archive/sipx-users/
>>>
>>>
>>>
>>
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