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HELP : SCCP Routing Fundamentals !!!

Wallis Dudhnath - 15th November 2016  (15:21 GMT)

As highlighted please send your questions and we will help.

ISUP is used for Connection Orientated signalling, i.e. signalling is performed so that a CIC can be secured. SCCP - Signalling Control Connection Part - provides extra information and helps to obtain extra addressing information for Rout(e)ing. Good example is to use SCCP to obtain information from Databases (HLR/HSS/UDC, MNP, SDF (Intelligent Network, etc..) so that Rout(e)ing can be performed.

For SCCP you will need to understand:-

Global Title - GT (like an IP address)
Sub System Number - SSN (access applications in a SS7 environment)
Originating / Destination Point Codes - OPC/DPC (MTP Layer)
Global Title Rout(e)ing Cases - GTRC -
(Translation of information)

VBR/ Wallis Dudhnath

C300G - 6th November 2009  (07:26 GMT)

Unfortunately I think there's no such docs.
Ask a questions. We'll try to answer.

>like which GT defined for SMSC
someone unassigned E.164 from operator numbering. Preferable old numbering.

>which GT for LU
Auth triplets request to HLR - by E.214 of subscriber.
Auth responce - by E.164 of serving node.

>which GT for MT Call
for what?

Charu Kapoor - 6th November 2009  (06:54 GMT)

Hi All,

I am working with an operator & till now was dealing with POIs so ISUP only was OK. But now I have to look after GT definitions . For this I need to know SCCP Routing - how to use GT , what definitons needed etc . Can somebody share some practical document about the SCCP Routing - like which GT defined for SMSC , which GT for LU, which GT for MT Call etc. I am very very confused
I can't read the ITU-T type docs. Pls send me a doc with lot of examples please
Pls do send that at

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