[Serusers] Failover PSTN Gateways

Adrian Georgescu ag at ag-projects.com
Thu Sep 2 11:18:34 CEST 2004


December 2004

On Sep 2, 2004, at 6:31 AM, Atle Samuelsen wrote:

> Howdy Adrian!
>
>  Do you know when you whing you'll be finnish with this project? or
>  atleast ready for use?
>
>
>  -atle
>
> * Adrian Georgescu <ag at ag-projects.com> [040902 00:42]:
>> There is some work in progress:
>>
>> http://download.dns-hosting.info/SERLCR/README
>>
>> Adrian
>>
>>>>>>>>>>
>> Hi list,
>>
>> We have a setup with 2 redundant stateful SER SIP-Servers with
>> accounting.
>>
>> For calls to the PSTN we have 2 ISDN-PRI gateways connected to
>> different ISDN-PRI lines.
>>
>> We need to implement a dynamic failover mechanism and load balancing.
>>
>> a) Incoming calls: No problem, the PSTN switch takes care of that
>> b) Outgoing calls:
>>   Both GWs are registered at both SERs; calls are usually relayed with
>> "t_relay_to_udp(x.x.x.x, "5060");"
>>   But how can I implement a quick failover including load-distribution
>> between those gatways?
>>   I.e. if I receive "busy here" or no response after a short period
>> after the "invite", the call should be redirected to the other GW.
>>
>> Thanks in advance for your help!
>>
>> Best regards,
>> Gerhard
>>
>>
>
>> _______________________________________________
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>> serusers at lists.iptel.org
>> http://lists.iptel.org/mailman/listinfo/serusers
>




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