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ddiaz17 10-21-2013 01:22 PM

Sip Trunking
 
Have a SIP trunk and when generating an inbound call I am seeing duplicates 180/Ringing SIP messages. Carrier is complaining about this. I am using an avaya SES.

rsriramoju 10-24-2013 12:36 AM

Hi I don't think Avaya SES can send duplicate 180 ringing can you please send me the SIP trace which you have . Let me have a look.



thanks very much

rogerfawbert 11-21-2013 03:21 PM

Possibly a TCP retransmission issue, we have seen the same thing. If packet loss is experienced on a SIP trunk using TCP, the identical packets get re-transmitted in set intervals until a response is received.


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