I have a Meridiam 1 Option 11 PBX working in my company, I can't upgrade this PBX to IP PBX with nortel because is very expensive. is there any way to use Asterisk and Nortel together to allow me to join small branches with norstar and the main office via VOIP?
Do I need some special hardware or specific version of asterisk?
I have conected the branches with main office with a data wan.
Thanks
Manuel