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Call flow for international roaming in GSM ?

+7 votes
5,038 views

Please specify the overseas physical medium and nodes for communication after commercial links has been made by the operators?

posted Jan 7, 2014 by Hiteshwar Thakur

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1 Answer

+1 vote

International roaming is no different then normal roaming at the technology point of view however there is a legal angle because of its nature i.e. cross border. It can be understood in the following steps.

Overview of International Roaming

Overview of International Roaming

Commercial Agreement

Commercial Agreement

Voice Call Flow

Voice Call Flow

SMS Call Flow

SMS Call Flow

answer Feb 20, 2014 by Salil Agrawal
Similar Questions
+1 vote

Hi ,

If any subscriber roamling in International Location how we can check on Home HLR/HSS to get its Int roaming Location .

Any specific parameter to get the details .

+1 vote

As we know that on basis of CAMEL contract, International roaming is possible, Visited-PLMN will generate the CDR at end and then forward it to home-PLMN. On basis of Call Data Records (CDR) home-PLMN will bill the user later in their currency.

The charging between the Operator's will happen as per the agreement.

So my Query is What if the user has crossed his credit limit during international roaming and ongoing call. How Visited PLMN will get to know about this information In between the ongoing call?

+2 votes

How the Network flow will be in this scenario? Just came up in my mind as I am not aware of this scenario, What would be the elements behavior and message exchanges in this case.

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