We are looking to install a VOIP system. The main office will house the system and two remote sites will connect to this system.
My question is related to the type of network we should have. There are conflicting opinions among some of the parties quoting us a system.
1. One provider indicates the following
Each Site will have a T-1 Connection. The T-1 at each site will connect to the providers switching and data platform providing dialtone and internet. They will absolutely not be connecting to us via the public internet
It will be a private direct T-1 connection to our switch. The remote sites will have a managed router on-site which will connect via T-1 to our network.
They indicate these will be direct T-1 connections so QoS will still be necessary but won't be a major concern because you have direct connection to our network, regardless though there will still be QoS enabled on the routers deployed at each of your locations as well as our data platform which consists of Carrier-Class Cisco Core Routers.
2. Other providers indicate connecting our sites via an MPLS network.
Any words of wiadom?