[VoiceOps] Delay on RTP for Inbound Calls

[Lee Riemer]

Not in my case. The captures sounded fine, it wasn't until metaswitch  
said they found an issue with old polycom fw that I was able to solve  
the problem.  It was like the metaswitch was ignoring the packets.

The problem was exactly the same, 1st ~5 seconds of silence towards  
the pstn.  Not on every call but easily reproducable.  The fw they  
upgraded to was 3.1.2 I believe.



On Jan 5, 2010, at 11:49 PM, Matt Yaklin <myaklin at g4.net> wrote:

>
>
> On Tue, 5 Jan 2010, Lee Riemer wrote:
>
>> I forgot, we had this issue with invalid RTP sequence numbers with  
>> old Polycom firmware.   Are you using Polycom phones?
>>
>
> If that was the case would not his captures of the traffic and the
> resulting replay be mangled at every point me mentions below?
>
> matt
>
>
>
>
>> On 1/5/2010 11:31 PM, Ujjval Karihaloo wrote:
>>
>>      I trace a call?on my cell phone I hear the first 1 -2 seconds  
>> clipped?however the trace sounds fine?.
>>
>>
>>
>>      Traced at SBC side facing Level 3
>>
>>      Traced at SBC side facing Customer (who receives inbound call)
>>
>>      Traced at Customer Prem
>>
>>
>>
>>      All the above 3 traces the Audio sounds fine, but on my cell  
>> phone I miss the first 2 seconds.
>>
>>
>>
>>      Ujjval Karihaloo
>>
>> From: voiceops-bounces at voiceops.org [mailto:voiceops- 
>> bounces at voiceops.org] On Behalf Of Lee Riemer
>> Sent: Tuesday, January 05, 2010 10:15 PM
>> To: voiceops at voiceops.org
>> Subject: Re: [VoiceOps] Delay on RTP for Inbound Calls
>>
>> Have you captured via wireshark and replayed?  Do you hear the same  
>> delay?  Is there a delay between the OK (answer) and the audio?
>> On 1/5/2010 8:22 PM, Ujjval Karihaloo wrote:
>> Hi Guys;
>>
>>    We have noticed that sometimes when calling into our DIDs (Level  
>> 3 DIDs), there is a 2-3 second lag. i.e. Cell phone caller (party  
>> A) calls into a DID
>> (Party B) that is on our network (Broadsoft Softswitch), Party B  
>> answers and sayd 1,2,3,4,5 ? but the Party A only hears 4, 5?The  
>> part i.e. 1,2,3 get cut
>> off.
>>
>> Plus it is sporadic and difficult to reproduce, was wondering if  
>> folks have encountered this and any good troubleshooting techniques  
>> you can recommend.
>>
>> Ujjval Karihaloo
>>
>>
>>
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