VOIP on an old phone system

hinthel
Joined: Wed 24 of Aug, 2016

VOIP on an old phone system

Posted:Wed 24 of Aug, 2016 (19:45 UTC)
I had a question from a small business in our area.
Can VOIP be added on to an old PBX?
From what they have told me they are running Avaya Merlin Magiks over cat 3/5 cable.
They wanted 1 extension to go over VOIP and to a cell phone. I think they heard about Asterisk's phone app. Not sure if that is even possible.