anyone using maxis home fibre with ADT alarm monitoring service ?

Previously using UNIFI where the alarm telephone will be connected to the telephone port of the TM BTU modem, with Maxis i have connected to the Maxis router , I have called to ADT and they say Maxis Fibre Telephony do not work with the alarm system and cant send signal via telephone to their monitoring centre, to make it work I will need to change to IP based system.

Just wondering if anyone have similar issues ?