3-13
Cisco CVA122/CVA122E Hardware Installation Guide
OL-0799-02 (05/2001)
Chapter 3
Installing the Cisco CVA122/CVA122E Cable Voice Adapter
Connecting to Telephones or Fax Devices
Step 1
Obtain the telephone number assignments for each voice port from your service provider, and label each
telephone, modem, or FAX device with its assigned number.
Step 2
Obtain a proper cable for each device to be connected. This cable should be either a two-wire or a
four-wire cable wired straight-through, with an RJ-11 connector on at least one end; the other end
typically has an RJ-11 connector as well, but this depends on the type of device being connected.
Note
When connecting a single-line telephone, you can use either a two-wire or a
four-wire cable. When connecting a dual-line telephone to the “V1+V2” voice
port, you must use a four-wire cable.
Step 3
Connect the RJ-11 end of this cable to the appropriate voice port (labeled “V1+V2” or “V2”) on the
rear panel of the Cisco CVA122/CVA122E Cable Voice Adapter. Press the cable firmly into the
receptacle.
Step 4
Connect the other end of the cable to the telephone, modem, or FAX device that has been given the
number assigned for that voice port. Press the cable firmly into the receptacle.
Caution
Do not connect the voice ports to telephone wires that exit the building under any
circumstances—this is a safety hazard. The Cisco CVA122/CVA122E Cable Voice
Adapter is not designed to connect to the Public Telephone Switched Network (PTSN).
See Figure 3-7 illustrates a possible configuration. The exact configuration depends on the phone
numbers that are assigned by the service provider.
Figure 3-7
Connecting the Voice Ports
Note
The “V1+V2” connector supports either a single-line analog telephone or a
two-line analog telephone. When using a two-line telephone, line 2 of the
telephone behaves as if a single-line telephone is plugged into the V2 voice port.
In this configuration, a device plugged into the V2 port act as extensions to the
line 2 telephone.
V1+V2
X
USB
Phone
Power
+5,-30,-56
V
Cable TV In
Ethernet
V2
Use the voice ports as assigned
by the service provider
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