Patent ID: 6282191
Filing Date: 2001-08-28
Classification: H04L,H04M

Abstract:
A system for transporting narrowband voice traffic from an originating PSTN switch which is coupled to an SS7 network, over a broadband ATM network, comprising:a) a first ATM switch coupled to the ATM network and coupled to the originating PSTN switch, said first ATM switch having a first interworking function means for converting SS7 signalling into ATM signalling;b) a second ATM switch coupled to the ATM network;c) an SS7 signalling router coupled to the SS7 network and to the ATM network, whereinsaid SS7 signalling router includes means for receiving, via the SS7 network, an SS7 SU generated by the originating PSTN, means for mapping at least a portion of the SS7 SU into one or more ATM cells, means for sending the one or more ATM cells via the ATM network to said first ATM switch,said interworking function means includes means for reading the SS7 SU from the one or more ATM cells, converting the SS7 SU into ATM signalling and sending the ATM signalling via one or more ATM cells to said second ATM switch in order to establish a VC between said first ATM switch and said second ATM switch.