All three processes could be located on the same SM-2000 or they
could be located in three different SM-2000s. Messaging between the
SMPs that host the processes is done over the quad link packet switch
(QLPS) network.
Routers
Control the routing of packets between the OPS and TPS and provides
alternate paths when necessary. A router is able to the read network
layer, IP, addresses of the transmitted packets and only forwards those
addressed to another network. Routers do not examine application
layer messages like SIP.
Terminating Packet Switch (TPS)
The TPS serves as a gateway between the PSTN and an IP network.
At the TPS, the incoming SIP call is routed out of the office to the
TDM network using TDM signaling. Any circuit peripheral can be
used for the outgoing call.
Terminating Switch
The terminating switch terminates the called party and interfaces to
the PSTN.
Connections
There are two network connections, bearer and signaling. The two
connections can be made through separate networks or through the
Network Architecture
Call Flow
....................................................................................................................................................................................................................................
235-200-118
Issue 3.02B, March 2007
Lucent Technologies
3-7
To Next Page
Loading...
Need help?
General
