[Serusers] sip load balancing

[Greger V. Teigre]

I assume you have looked at dispatcher module.  Without completely 
understanding what you are trying to accomplish: Why can't use that module?
g-)

Karunakar Chemudugunta wrote:
> I have a same problem as explained below.
>
> PSTN ---> VOIP GATEWAY(Cisco AS5400) --> SER-------> Multiple media
> gateways.
>
> Planning to depoy media servers which can able to running IVR
> fuctionality and would like to use SER in front of lot of media
> gateways.
>
> Each media gateway, might be running lot of user agents which are able
> to serve IVR fuctionality. all these user agents are going to register
> with SER with <media server hostname_channel number>  format as user
> name. Eg. mediaserver1_ch1 at mydomain.com
>
> Otherside, SER will receive call from PSTN through VOIP Gateway with
> multiple DIDs and these calls need to route calls to media gateways (
> typical hosted call center environment )
>
>
> I have tried with lot of possibities using ser.cfg file and did n't
> find way to route calls to media gateways.
>
> Just I am thinking, it would be possible to write another module or
> part of userloc module, which gives a routing fuctionality like cyclic
> or rotary senarios which helps load balancing and easy maintenance of
> media servers.
>
> Possible solution
> ------------------------------
> Lets assume, if we have resource file called resource.cfg which has
> all did and resource mapping. All resource names are substring of
> usernames of useragents in media servers.
> resource.cfg
> ##########################################
> resource:resource1 =
> mediaserver1,mediaserver2,mediaserver3,mediaserver4,mediaserver5
>
> did:8005551212 = cyclic:resource1
> did:8005551213 = rotary:resource1
>
> ##########################################
>
> every invite message need to call fuction like lookup_route() instead
> of lookup() in ser.cfg
>
>
> this fuction instenally calls routing module, searches for did in
> resource file and get corresponding resource type( rotary or cylic),
> resource name.
>
> search each resource member in useloc using function get_urecord  and
> it if avaialbe and route calls to that particar user.
>
> Summary:
>
> 1.  ser receives call from PSTN
> 2.  Finds resource name for DID
> 3.  Find resource string depend of type of routing from resorce list.
> 4.  Serach usrloc database with resource string as sub string of
> usernames in userloc database.
> 5. Forward call to that particular media gateway.
>
>
> Welcome for any comments and thoughts ?
>
> Thanks,
> Karun Chemudugunta
>
>
>
>
>
> On 5/10/05, a c <lra101 at yahoo.com> wrote:
>> hello Iqbal,
>>
>>  just need the SIP messages load balance across
>> servers. No RTP.
>>
>> thank you
>> ac
>>
>> --- Iqbal <iqbal at gigo.co.uk> wrote:
>>> mediaproxy can do it using dns. Am assuming you want
>>> the rtp stream load
>>> balanced, if its the sip messages, search throuygh
>>> the archives there is
>>> along discussion bout howto use LVS and load
>>> balancing....in short
>>> doesnt seem to work, cause SIP uses udp
>>>
>>> Iqbal
>>>
>>> a c wrote:
>>>
>>>> hello,
>>>>
>>>> got a question on SER. Could SER do load balance
>>>> across SIP servers?
>>>>
>>>> for example:
>>>>
>>>> SIP carrier --> SER --> Media/App Servers
>>> {multiple}
>>>>
>>>> Are there any Configuration examples I can look at?
>>>>
>>>> thank you
>>>> ac
>>>>
>>>>
>>>>
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>>>
>>
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>
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