I have been given the task to test and implement VoIP on our exixting network. We have two remote offices and currently they are connected using point-to pint lease line,with the bandwidth of 128K and the other 64K.
We have a PBX at our main HQ (where Im currently based) and according to the installer, the PBX has capability of VoIP.
Im planning to upgrade the lease lines to our remote office to 2Mb each.
At our HQ, we have a 3661 with only one slot empty. We want to do a test for the time being where the PBX at our HQ act as the main PBX for our two remote office.
We want the setup to be something like this:
phone(extension 200) <---->HQ PBX <------>HQ Router<------------------------>Office branch Router <--->phone(extension 300)
2Mbps Data circuit
We are currently using encapsulation PPP on our serial links and static routing. Im currently using 1751's at the remote sites
I need advice on the following:
1. Router cards needed
2. IOS of the routers capable of VoIP
3. cables needed
4. Sample configuration
Need your help