[SIPForum-discussion] 408 Request Timeout on INVITE

Abhisek Acharya abhisek.acharya at gmail.com
Thu Sep 20 05:02:48 UTC 2012


Hey Martin

I believe the SIP proxy timer gets expired as it does not get any 18x
response from the far end.So the proxy is releasing the call with 408
response.
Let me know your thoughts in this.

Regards
Abhisek Acharya
GS-LAB
PUNE


On Thu, Sep 20, 2012 at 10:09 AM, Abhisek Acharya <abhisek.acharya at gmail.com
> wrote:

> Does T1 timer gets expired here.Just a guess
>
>
> Regards
> Abhisek
>
> On Wed, Sep 19, 2012 at 8:59 PM, Martin Thorpe <
> martinjasonthorpe at googlemail.com> wrote:
>
>> Hi all
>>
>> I'm wondering if you would be able to give me some advice, I'm trying to
>> write an app that sets up a call between my end point (softphone) and
>> another end point registered on the switch.
>>
>> Basically the call goes like this:
>>
>> 1. I send INVITE from my end point via a SIP proxy to the called number (
>> 5052 at domain.com) the SIP proxy then sends me back a 100 TRYING
>>
>> 2. The SIP proxy sends the INVITE on behalf of me to the Switch that the
>> called end point is registered on
>>
>> 3, A 408 Request Timeout is sent immediately back from the SIP Proxy to
>> me (the caller).
>>
>> 4. I ACK the timeout and tear down the call.
>>
>> The strange thing is that the SIP session ladder shows the 408 Timeout
>> from the Proxy go to a step named (Error) instead of me the calling end
>> point.
>>
>> The only error I can see in the logs is "SIP Signaling Error" 408 Request
>> Timeout.
>>
>> Does anyone have any ideas?
>>
>> Thanks
>>
>>
>>
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