Dynamic admission control for media gateways

A Media Gateway, in connection to a backbone, measures a packet loss and/or jitter, receives a call and notices an indication that a higher packet loss and/or jitter is acceptable. The Media Gateway decides, based on said measured packet loss or jitter and said indication, whether the call is admitted to be routed via said backbone even though the packet loss or jitter is above a predefined threshold. A Mobile Switching Centre Server in connection to a backbone, receives a call set-up, detects that a call set-up should be performed by a Media Gateway even if the packet loss or jitter is above a predefined threshold, and provides an indication to the Media Gateway that a higher packet loss or jitter is acceptable.