Hi Tony,

Thanks for the reply !

I didn't get a sip-trace but I will a bit later when I get in the office.

In the mean time, I can offer Wireshark's VOIP Flow diagram.

Thanks !

Philippe.

|Time     | 10.70.225.101                         |
|         |                   | 10.70.103.100     |
|15.526   |         INVITE SDP (g722 g711U g711A g729 
telephone-ev...RTPType-101)          |SIP From: "Philippe Bechamp" 
<sip:[email protected] 
To:<sip:[email protected];user=phone
|         |(5060)   ------------------>  (5060)   |
|15.527   |         100 Trying|                   |SIP Status
|         |(5060)   <------------------  (5060)   |
|15.528   |         407 Proxy Authentication Required          |SIP Status
|         |(5060)   <------------------  (5060)   |
|15.554   |         ACK       |                   |SIP Request
|         |(5060)   ------------------>  (5060)   |
|15.557   |         INVITE SDP (g722 g711U g711A g729 
telephone-ev...RTPType-101)          |SIP From: "Philippe Bechamp" 
<sip:[email protected] 
To:<sip:[email protected];user=phone
|         |(5060)   ------------------>  (5060)   |
|15.558   |         100 Trying|                   |SIP Status
|         |(5060)   <------------------  (5060)   |
|24.601   |         183 Session progress SDP (g711U telephone-even...PType-101) 
         |SIP Status
|         |(5060)   <------------------  (5060)   |
|24.712   |         RTP (g711U)                   |RTP Num packets:17  
Duration:0.320s SSRC:0x12FE0FDC
|         |(2230)   ------------------>  (20006)  |
|24.712   |         RTP (g711U)                   |RTP Num packets:2374  
Duration:47.460s SSRC:0x12FE0FDC
|         |(2230)   <------------------  (20002)  |
|24.720   |         RTP (g711U)                   |RTP Num packets:32  
Duration:0.299s SSRC:0x28A943DA
|         |(2230)   <------------------  (20002)  |
|25.041   |         RTP (g711U)                   |RTP Num packets:4722  
Duration:47.198s SSRC:0x489F3B37
|         |(2230)   <------------------  (20002)  |
|25.051   |         200 OK SDP (g711U telephone-eventRTPType-101)          |SIP 
Status
|         |(5060)   <------------------  (5060)   |
|25.053   |         RTP (g711U)                   |RTP Num packets:2357  
Duration:47.120s SSRC:0x12FE0FDC
|         |(2230)   ------------------>  (20006)  |
|25.070   |         ACK       |                   |SIP Request
|         |(5060)   ------------------>  (5060)   |
|72.229   |         BYE       |                   |SIP Request
|         |(5060)   ------------------>  (5060)   |
|72.259   |         200 OK    |                   |SIP Status
|         |(5060)   <------------------  (5060)   |



On 2011-10-18, at 6:56 AM, Tony Graziano wrote:


what is your pstn connectivity? did you grab a siptrace? if so, I. an look at 
that if you like.

On Oct 18, 2011 2:27 AM, "Philippe Bechamp" 
<[email protected]<mailto:[email protected]>> wrote:
Hi there,

Wonder if anyone can help me troubleshoot a one way audio problem.

First of all, everything works fine with Bria - I can call anywhere in any 
direction.

The issue happens with Polycom IP450 phones.

The setup had been working fine for weeks and weeks. Then one day, sound seems 
to progressively degrade when making outgoing calls. After a while, boom, the 
receiving party of calls originating from the IP450 hears us but we can't hear 
them. The problem lasted about 36 hours the went away on it's own or I am not 
sure what i did to make it go away.

Now, two weeks later, this has happened again.

I have updated the IP450 to the recommended version on the wiki.

I have traced and traced. It does not seem to be a firewall/nat/helper issue as 
a) Bria works fine on the same subnet b) doing port copies on my switch, I can 
see the packets being sent to the hardphone.

>From my limited but growing understanding of SIP calls, the server -> phone 
>direction seems doubled (though it might just look ok to me…). I can't hear a 
>thing and the diagnostics / media statistics on the phone increment in the 
>outgoing direction but not in the incoming direction.

Anyone have any idea that could help me pin this down ? Might it just be a 
phone firmware issue ?

I have supporting material if that can help.

Thanks,

Philippe.



|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||

Philippe Bechamp | Manager, IT / Security

Neuralitic Systems Inc.



M. +1.514.812.9609<tel:%2B1.514.812.9609>

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Philippe Bechamp | Manager, IT / Security

Neuralitic Systems Inc.



M. +1.514.812.9609

E. [email protected]<mailto:[email protected]>

This message and attachments are for the use of the addressee only and may be 
confidential. If you are not the intended recipient, please notify the sender 
immediately by e-mail and delete this message and attachments. Thank you.


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