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Author Topic: Roaming  (Read 529 times)
itsnomihere
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« on: May 08, 2006, 17:12:05 UTC »

Consider there is only one HLR
SMSC is linked with MSC (B)

A Subscriber of MSC(A) is in region of MSC(B)
A subscriber of MSC(B) tries to do SMS to this subscriber

Question
=========
1- Will the SMS Address return by the HLR will be the address of MSC (B)
2- Can SMSC encode this parameter in point to point request
3- Or shall SMSC has to encode this param along with DPC in open diallog request



Urgently please
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shad
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« Reply #1 on: May 09, 2006, 18:52:17 UTC »

If both subscribers are homed on the same HLR, then what does it mean to say "subscriber of MSC(x)"? Both subscribers belong to the HLR, and are roaming in an MSC's coverage area. From the network's perspective the fact that the destination subscriber is normally registered in MSC(A), but today happens to be in MSC(B) is not important.

The SMS_Address returned by the HLR will be that of MSC(B), as reported by MSC(B) during registration. Normally this is a DPC, but the SMS_Address parameter can contain a Global Title instead if that's how your network routing is set up.

The received SMS_Address forms the transport layer address (i.e. MTP DPC or SCCP CdPA) of the resulting SMDPP.  It may possibly also be contained in the SMS_DestinationAddress MAP-layer parameter, but it's not necessary.
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