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Would you like share your knowlegde about ISUP massages?
How are their structure and they do?
Please find the link where you can find the messages and their structure too:http://www.asknumbers.com/SS7ISUPMessages.aspx
refer http://telecomprotocols.blogspot.in/2012/09/isup-isdn-user-part.html for ISUP.
Kindly share the logic of routing of internal network number indicator.
As in some case it remain allowed while in some cases it isn't .
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