[SIPForum-discussion] SIP response 480 is same as SIP response 408

[balajivenkat subramanian]

Hi Amit Salunk ,

To be simple ,

1.480 SIP response is ideally for subscriber or number related issues.
2.408 RTO occurrs in case of no reply from farend provider
or operator happens due to network related issues , sever not
responding etc..

Regards,
Venkat



On Sun, Jun 13, 2010 at 2:01 PM, AMIT ANAND <amiit.anand at gmail.com> wrote:

> Hi Amit,
>
> Response 408 RTO is for a situation where any UAS is trying to send call
> further but did not get any reply back.
> Typically in your scenario say VOIP provider_2 is sending INVITE to PSTN
> operator ( Considering conversion is occuring at PSTN operator) but is not
> getting any reply from PSTN operator then it will give 408 to provider 1
>
> Temp Unavailable is that VOIP provider 2 sent invite to PSTN and the number
> is not available right now due to many possible reasons, might be turned off
> incoming calls at the moment or some thing like that
> So typically 408 cannot be send instead of 480.
>
> RFC 2833 if for DTMF , for these cause codes please refer to RFC 3261
>
> Cheers
> Amit
>
>
>   On Sat, Jun 12, 2010 at 6:59 PM, amit salunkhe <amitsalunkhe21 at gmail.com
> > wrote:
>
>>  Hi All
>>
>> As per the following call flow can anybody gudie me whether receiving Sp
>> response 408 instead of 480 when far end PSTN user is unavailable or
>> unreachable?
>>
>> Call Flow-
>>
>> Voip provider 1--------------------->VOIP
>> provider2_-----------------------> PSTN operator-------------------------->
>> PSTn network--->User
>>
>> If VOIP provider 1 getting SIP response 408 requs. time out instead of 480
>> Temp. unavailable, is this right signaling? Within RFC draft 2833 is here
>> any comment on this,like for temp. unavailable or unreachable user we can
>> accept 408 instead f 480?
>>
>> Please comment your thughts.
>>
>>
>> Amit--
>>
>>
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