Dear VoIP experts,
I am the IT manager of a medium size company of about
170 users. We are in the market for a new phone system
due to the fact our exsisting PBX has reached its time
(12 years old). Purchasing a system that is VoIP
based/enabled is not a problem, actually a requirement
from our management.
The problem I have is that we have narrowed down the
participants to Cisco, Avaya and Altigen. At the end
of the day most of the main features are an
apples-to-apples comparison, but one thing, which VoIP
protocols to use? H.323, SIP or MGCP? Is there any
information on which one would be better to use/implement?