Splitting a Point to Point T1 for Voice/Data

We currently have a Point to Point Full T1 with a Cisco 1721 on each
end. Each router has as T1 CSU/DSU Wic Card installed. We are
interested in getting the remote office connected using a point-point
so we can have four digit conferencing between offices. Our phone
company said they can do that with a point-point T1 circuit, but they
only need two channels.

Is there a way I can split off 2 of the channels from the data T1 and
somehow configure it to be used for Voice? I realize I would have to
buy something because I only have one Wic card installed and that
plugs into our network.

Thank you,
Douglas McIver

 

Doug, yes, you can do this with the appropriate CSU/DSU. I'm not sure if
there are internal ones for the Cisco routers available. I've used the
Adtran TSU120e, which does what you are looking for, but would require that
you use a serial wic rather than the internal CSU card. It has a DSX port
for the voice and then a v.35 to connect to the router. You can specify
which channels are used for voice and which for data.

Hope that helps,

Jim

 

Great, thank you jim.

douglas