To use a Mikrotik router with the BT IP TV service IGMP Proxy interfaces have to be added and some changes need to be made to firewall rules.

BT IP TV On Mikrotik Routerboard

Step 1 - Don't Switch To A Cheaper Tariff; Step 2 - Understand Your Bills; Step 3 - Correlate Your Bill With The Services That You Are Using; Step 4 - Take Advantage Of Lower Cost Technology & Services; Step 5 - Ensure That You Are On The Most Cost-Effective Tariffs

How To Cut Your Business Phone & Internet Bills