Praposed connectivity for voice between head quaters IP phones to remote branch analog phones is as for the attached network diagram.Cisco 2821 routiters with 12.2 IOS are interconnected using leased line(v.35) between HQ TO REMOTE BRANCH .At remote branch analog phones are connected on FXS ports .At HQ end IPPBX with required number of user liseces for IPPHONES is connected to the router through a ethernet switch.Is the network setup given in the diagram is correct for the desired connectivity between HQ ip phones to BRANCH analog phone.What should be the configuration requirement at router for the abive connectivity.
Plz give me some examples
your lab setup is similar to what I had guessed.
the IP PBX has an IP address in the same IP subnet of HQ 2800 lan interface.
You can run a routing protocol over the V.35 point -to- point link in order to advertise HQ LAN subnet.
In addition to what already listed in my first post the use of QoS to provide a priority queue for VoIP calls is recommended.
The QoS part can be added later to the lab setup.
Hope to help