I need someone to help me with buying a Cisco router and its accessories for my HQ. Am thinking along the line of a 2851. I need to connect in 4 remote sites all through telco lease circuit running 2megs. To start of with 1 of the 4 WAN sites we will connect their PABX to the main one at the HQ. PABX are connected to the LAN and voice traffic will go through the routers fast ethernet then to the WAN links for remote site sand vice versa.
I agree with your considerations.
Truth is, sizing routers will always be an issue and even more now with so many models to choose from.
My approach is to let the client know about the price steps first, that pretty much sets the right tone for any further discussion.