PRN – Provide Roaming Number
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PRN – Provide Roaming Number

The MAP PRN message is sent from the HLR to the MSC serving a mobile for which an incoming call is being processed. The message triggers the MSC to forward an MSRN (Mobile Station Roaming Number) to the GMSC via the HLR. This MSRN is used by the GMSC to route the call to the correct MSC.

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