This guide will assist you in setting up an MATA from Patton Electronics with an Avaya IP Office. The Patton MATA is a single port FXS device used when you want to integrate an FXS endpoint like an analogue phone, bell or ringer with a SIP based phone system.
Avaya do offer Analogue cards which could do this job also but the MATA is a nice cost effective option if you have the requirement for a single extension. Read more >>>