Hi Nabeel,

Well, first check your SIP traffic and see which party is generating the 408 reply - is your opensips or the callee ?

Does OpenSIPS forwards the call to the callee ?

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com

On 05.01.2016 16:55, Nabeel wrote:

Hello,

I have an SIP client which works fine during the first 15-20 minutes of registration. Registration has an expiry of 24 hours, but after approximately 15-20 minutes of idle registration, attempts to call the other phone fails with '408 Request Timeout' error. Re-registering the caller's phone makes no improvement to this, but re-registering the callee's phone allows the calls to go through for another 15-20 minutes.

I understand that Request Timeout can be initiated by either the client or the server. The know that the possible reasons are:

1) The callee/endpoint to be reached is somehow set on passive mode and not responding to any call

2) The server does not get proper information about the location info of the endpoint after query.

And in the server logs, I only see this:

ACC: call missed: timestamp=1445625568;method=INVITE;from_tag=z9hG4bK58506340;to_tag=;call_id=879087082370@2a04:4a41:111:cf09::1d92:e0ac%4;code=408;reason=Request Timeout

However, I am unsure how to troubleshoot this further and how to go about determining the exact cause. Any advice or tips would be very helpful.



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