| 摘要 |
A method of signalling in a telecommunications network to control a set of circuit switched channels between a network exchange and an Internet Access Server, alternatively known as Network Access Server (NAS). Signalling data is transmitted between the exchange and gateway node using SS7 Protocol, the exchange and gateway node being assigned respective SS7 Point Codes. The signalling data is then transmitted between the NAS and the gateway node using Internet Protocol (IP), the gateway node and the NAS being assigned respective IP addresses. The gateway node is provided with a look-up table mapping the NAS IP address to the exchange Point of Code and a set of identifiers corresponding to said set of channels. Signalling data received at the gateway node from the exchange is routed to the NAS using the IP address for the NAS obtained from the look-up table using the Point Code of the source exchange and a channel identifier conveyed with the signaling data. |
