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visit it
voipguides.blogspot.com/2008/09/fizzcall-offers-cheap-international.html - 186k -

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Posted by waqasahmad

You must visit the PTCL website for detail

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Posted by HamidAliKhan

http://www.scribd.com/doc/6922857/GSM-Originating-Call-Flow

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Posted by Hash007

For details:

www.scribd.com/doc/6922857/GSM-Originating-
Call-Flow

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Posted by sagitraz

Please if this link helps. If you need more help reply back.

http://www.eventhelix.com/RealtimeMantra/Telecom/ISUP_ISUP_Call_3.pdf

Are you talking about Class4 or Class5 Features?

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Posted by karthi