Would like to connect a fax but only port 1 or (tel 1) port 2 does not work, should i send back to comcast or reset modem
There is nothing wrong with your modem. Comcast charges extra for a second line. Depending on your model of fax machine, there should be both an input ond an output on the back of the fax machine. Plug the fax machine into line 1 on the modem. Then, plug your phone into the input on the back of the fax machine. If you fax does not have both in and out, then you can purchase a "Y" phone line adapter from your local electronics store.
ps. VoIP is a digital line... Facsimiles are analog signals... Sending analog signals over digital lines is not recomended. If you are wondering "why?" (and understand tech jargon) VoIP is sent via UDP, which is a connectionless protocol (does not retransmit dropped packets) Fax machines use TCP, which does resend dropped packets. This variance in Qualiy of Service sometimes cases strange activity such as both lines (sending and receiving) dropping connections, faxes taking a long time to transmit (due to constant resending loops), etc. It does work... kind of. I would just not assume that faxes made it to their destination until it gets confirmed.
Dec 31, 2010 |
RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)