13 Oct
2008
13 Oct
'08
8:36 p.m.
Hello,
On 10/13/08 18:24, Klaus Darilion wrote:
I meant to change the timeout to fr_inv_timer value, not to change the
behavior of existing parameters. So, you are right, a new parameter
could be the solution in this case.
Cheers,
Daniel
--
Daniel-Constantin Mierla
http://www.asipto.com
Daniel-Constantin Mierla schrieb:
:-) he he ... do you mean: fix == replace?!?!
Hello,
On 10/13/08 16:14, Klaus Darilion wrote:
should we fix the PSTN? :-)
Hi Alex!
Not sure what you mean:
For detection if the gateway responds at all use fr_timer. I set it to
2 seconds. If there is no reply from the gateway within 2 seconds, the
failure route will be executed. If there is a reply (e.g. 100), then
tm module changes to fr_inv_timer which I have set to 120 seconds.
if I get it right, might be similar to something I encountered quite
recently. There are some PSTN termination providers that frontend their
GW farm with a proxy. That proxy sends quickly 100 trying but then it
takes too long to get ringing or 200ok.
So I would have needed to change to fr_inv_timer
if != 100 is received
in fr_timer.
Not changing - maybe adding a new one. The fr_timer is needed for fast
detection of GW failures.
Cheers,
Daniel
> regards
> klaus
>
> Alex Balashov schrieb:
>
>
>> It would be really nice to have a feature in TM for even faster
>> failover that is turned off when any reply is received at all,
>> provisional or otherwise.
>>
>> The problem with fr_timer and fr_inv_timer is that they throw on lack
>> of final reply. But sometimes gateways have very lengthy,
>> complicated asynchronous operations that must complete before they
>> can return a final OK. If you are doing failover, the most important
>> thing to know is that the gateway is there at all, which the
>> provisional 1xx message accomplishes.
>>
>> What would be really nice is to have a timer that can be diffused as
>> soon as a provisional reply arrives.
>>
>> I don't see how this can be accomplished with any of the existing
>> timers.
>>
>>
>>
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