What Equipment would you suggest for this customer. They have 4 sites with merlin switches and 1 site with a nortel option 11. They wish to connect all locations to one central office (which now has a maxed out merlin legend). This location would use point to point T1's and a dialing plan instituted thru out to allow tranxfer and extension dial with all the switches. Any suggestions on what to use at the main site and can the nortel communicate with the avaya product via point to point.