Question about RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

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I have a RCa broadband modem from Comcast. I want to connect my computer Fax card to it. IS that ok? How do I do it? Just connecthe telephone cable from the port at the back of the computer to the RCA Modem?

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Yes it is perfectly OK. Remember that a fax essentially works as a phone, so you would run a line from the RCA modem to your fax card, then from the fax card to your telephone. In this scenario you would have to accept your faxes manually though.

Posted on Mar 16, 2011

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I have a Dell inspiron 537 sesktop pc and the lan adapter is not recognizing the ethernet lan connection. I reinstalled the drivers etc but it still show " not connected ". Is there anyway to...


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I have an HP 2510 printer. I cannot use it to fax because once I plug the phone jack into the printer I get a busy signal. If I plug the jack into a phone, it works fine. How do I get the printer to...


Hi irwinbadin,

HP fax products are designed so that other telephone equipment can be connected on the same line as the fax. The unit must be connected first using a two-conductor fax/phone cable like the one that shipped with the HP product. Using a four-conductor telephone cable may cause problems receiving faxes or calls.

There are two different types of phone cables. There are two-conductor phone cables like what originally shipped with the HP fax product and there are four-conductor cables. HP fax products are designed to work with a two-conductor phone cable. Look at the end of the cable and verify that it has only two copper leads or wires. Replace any four-conductor cables with a two-conductor cable. Only two-conductor phone cables should be used to connect the all-in-one to the phone line.

Figure 1: The difference between a two-conductor phone cable and a four-conductor phone cable
reyjoshua07_5.jpg


Step one: Connect the phone line to the fax
The fax will have two or three sockets (or jacks) for phone lines. Some of these may have a removable plastic plug in them. These sockets will be labeled with text, To Wall Jack , or with a graphic of the wall jack. See Figure 1 below.

Plug the two-conductor telephone cable that came with the HP product into the telephone wall jack. Then, plug it into this socket as shown below.

reyjoshua07_6.jpg


In areas with above ground telephone lines and electrical storms (lightning), it is a good idea to purchase a telephone line surge suppressor and connect it between the telephone wall jack and the fax. This will help prevent damage to the fax from a lightning-caused power surge on the phone line.

Step two: Add other phone-line devices
To connect other telephone devices, use the other socket (or sockets) on the fax. These are identified by text or with a graphic of a telephone and/or computer.

Connect a caller ID unit between the fax and the telephone.
Use the information below that matches the devices you need to connect.

Fax and telephone
Connect a single-line telephone to one of the added sockets on the fax. The telephone will share the same phone line as the fax. See the illustration below.

reyjoshua07_7.jpg


Fax, answering machine, and telephone
When a telephone answering machine and telephone are connected, connect the answering machine to the fax and then connect the telephone to the answering machine as shown below.

reyjoshua07_8.jpg


Fax and computer modem
To use a fax and a computer modem on the same phone line, connect the fax to the computer modem. The modem socket on the computer may be labeled Line or Wall jack .

reyjoshua07_9.jpg


Fax, computer modem, and telephone
To use a computer modem and a telephone with the fax, connect the computer modem to the fax. Then, connect the telephone into the second phone line connector on the computer modem or the third fax socket (if it is available). The image below shows how to connect a computer and a telephone to a fax with two sockets.

reyjoshua07_10.jpg


Fax, modem, answering machine, and telephone
The image below shows how to connect a computer modem, answering machine, and telephone to a fax. Connect the computer modem to the fax, then connect the answering machine to the computer, and finally, connect the telephone to the answering machine.
If the fax has three phone line sockets instead of two, some of the devices can be connected to the other phone socket on the fax.

reyjoshua07_11.jpg


Hope it helps.

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