[asterisk-users] SIP trunk and congestion handling

[Mordechay Kaganer]

B.H.

Asterisk 1.8.22

Thanks
On Aug 12, 2013 8:05 PM, "Shishir Pokharel" <Shishir.Pokharel at on24.com>
wrote:

>  Which version of asterisk are you using ? ****
>
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> *From:* asterisk-users-bounces at lists.digium.com [mailto:
> asterisk-users-bounces at lists.digium.com] *On Behalf Of *Mordechay Kaganer
> *Sent:* Sunday, August 11, 2013 8:59 AM
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
> *Subject:* [asterisk-users] SIP trunk and congestion handling****
>
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> B.H.****
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> Hello, all. We have a dialer software that runs outgoing telephony
> campaigns. We have been using it successfully with PRI cards, now we're
> evaluating it's use also with a SIP trunk. Most of the things run perfectly
> good without a need to change anything except for dial string, but there's
> some strange problem with asterisk interpreting SIP result codes. ****
>
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> Our software is written in Java using asterisk-java library. It is using
> Asterisk's reason code from OriginateResponseEvent to determine if it
> should redial the number. Our consideration is that if Asterisk returns
> reason code 8 (Congestion) this means that the call has never actually
> reached the destination number, and it's OK to try to redial again.****
>
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> But with SIP trunk, many times i can see a really strange sequence of
> events:****
>
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> After INVITE i get the following responses (example from a real
> conversation)****
>
> [17:01:40] SIP/2.0 100 Trying****
>
> [17:01:40] SIP/2.0 183 Session Progress****
>
> [17:01:51] SIP/2.0 480 Temporarily not available****
>
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> As far as i understand, this means that the remote phone was ringing for
> 10 seconds and then the call failed due to a timeout. As far as i
> understand, i'm supposed to get reason code 3, but actually the java
> application gets OriginateResponseEvent with failure reason code 8.****
>
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> This behavior is hard to reproduce. I was trying with my own phone number
> and then i get the expected reason code 3, but i constantly get this
> situation running our customer's campaigns.****
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> -- ****
>
> משיח NOW!****
>
> Moshiach is coming very soon, prepare yourself!****
>
> יחי אדוננו מורינו ורבינו מלך המשיח לעולם ועד!****
>
> --
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