MSRN
From Wikipedia, the free encyclopedia
MSRN - Mobile Station Roaming Number
The Mobile Station Roaming Number is an E.164 defined telephone number used to route telephone calls in a mobile network from a GMSC (Gateway Mobile Switching Centre) to the target MSC. It can also be defined as a directory number temporarily assigned to a mobile for a mobile terminated call. A MSRN is assigned for every mobile terminated call, not only the calls where the terminating MS lives on a different MSC than the originating MS. Although this seems unnecessary since many vendors' VLR's are integrated with the MSC, GSM Spec indicates that the MSC and VLR do not need to reside on the same switch. They are considered two different nodes as they have their own routing addresses.
