Welcome to Comcast Help & Support Forums
Find solutions, share knowledge, and get answers from customers and experts

New to the Community? Start here.

Posted by
  • The Community would like to Welcome you!

Member Since: ‎04-12-2012
Posts: 1

Using a fax machine with Comcast phone service

Can a fax machine be used with the phone service? If yes, must the fax machine be located and plugged into the Comcast phone modem?



Posted by
Cable Expert

Member Since: ‎03-02-2007
Posts: 15,192

Re: Using a fax machine with Comcast phone service

The phone cord on the fax can be plugged into any active phone jack in the home that is connected to the Comcast eMTA telephony modem.


If you don't have your inside phone wiring connected to the eMTA, then the fax will need to be plugged into the L1/L2 jack on the eMTA just like the phone cord.