MTRF
Mobile Terminated Roaming Forwarding

MTRF is a technique used in CSFB to reduce the delay that may take place in an MT fallback scenario in which the phone, at the point of fallback, attaches to a different MSC (usually due to Location Area mismatch). In this scenario, the call is forwarded from the MSC attempting to handle the call to the MSC actually responsible for the subscriber.

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