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Actions of the GMSC on receipt of CAMEL_Connect within MTC

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shumok
Actions of the GMSC on receipt of CAMEL_Connect within MTC

Hi there.

On site we have MTC controlled by CAMEL logic as well as MOC. Recently we have moved to CAMEL_Connect instead of CAMEL_Continue (on both MTC and MOC) and immediately have encountered the following behavior of GMSC.

Considering MTC:
As SCF gets IDP with A and B numbers in national format, it replaces B (called party) with international B and replies with CAMEL_CONNECT(B international), so the call process hangs up for approximately 30-40 seconds and terminates with T_Abandon, meanwhile, right after CAMEL_Connect dispatching, SCF receives new IDP with A and B in national number. What in fact leads to  endless loop (definitely it is not really endless, thanks to protection mechanism, but still the call is dropped in result)

So the question is, what is the correct behavior of GMSC in such case, and in particular, in case of receipt of CAMEL_Connect with modified dialed type (dialed number is changed as well to correspond international format)

Edited by: admin on 05/16/2010 - 04:32
nandeesh
Re: Actions of the GMSC on receipt of CAMEL_Connect within MTC

Once you have given Connect with B Party changed probably GMSC is not able to recogniza that number, pls check in the message what is the new changed number or is there any other prefix that is comming.

Since GMSC is going to route to particular trunk based on that number so check exactly what is the B Number

kanai_panda
Re: Actions of the GMSC on receipt of CAMEL_Connect within MTC

If GMSC is originating the call then define new modified  number series at B-Table and give the route and check whether it is selecting route

If GMSC is receiving IAM and send SRI to HLR and get TCSI and triggers to IN and get connect. then second time it sends SRI with CSI suppres to HLR . Since , B-party MSISDN is used as GT to HLR. then You have to define this modified GT and send to HLR
or modify the B-party and send SRI.

Regards
Kanai