TP-Link TD-W8961ND Operation Manual page 7

You're now done configuring the modem for use with MLC's internet.
However, if this is a Brand New Router we will need the MAC (Media Access Controller)
address in our systems at Memory Lane for the connection to work properly.
It can be obtained from the status page within the router's settings.
Call us at 403-526-2288 and we will help complete this final step.