SIN 498 is the specification defining BT's VDSL2 service requiremetns in order that products meet specific stanards of support and compatibility.  In the testing programme, devices undergo extensive testing to check if they meet the standard and comply with all of BT's requirements.  The MCT covers many different aspects of a device's operation and is conducted without vendor interaction. DrayTek's Vigor routers received a "full pass" in the testing programme.

To get information detaily, please visit DrayTek UK. 

BT is a holding company which owns British Telecommunications plc, a British multinational telecommunications services comany with head offices in London, United Kingdom. It has operations in around 170 countries.