An arrangement providing access between a mobile communications network and a private network with at least one exchange or private branch exchange. Mobility serving devices are connected to the exchange or the private branch exchange over a first interface providing access to/from mobile cellular phones...http://www.google.fr/patents/US5956652?utm_source=gb-gplus-shareBrevet US5956652 - System and method relating to cellular communications
System and method relating to cellular communications
