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Cisco CVA122/CVA122E Hardware Installation Guide
OL-0799-02 (05/2001)
Chapter 3
Installing the Cisco CVA122/CVA122E Cable Voice Adapter
Physical Placement
Physical Placement
The Cisco CVA122/CVA122E Cable Voice Adapter can be placed flat on a desktop, placed on its side
using the supplied support stand, or mounted on a wall. See the following sections for more information.
Placing the Cisco CVA122/CVA122E Cable Voice Adapter on a Desktop
The Cisco CVA122/CVA122E Cable Voice Adapter can be placed flat on a hard, stable surface such as
a desktop or table top. When doing so, use the following guidelines:
•
Place the cable voice adapter close to the cable TV drop connection and all devices to be connected
at the subscriber site.
•
Install the cable voice adapter in compliance with all national and local electrical codes such as:
–
US NFPA 70
–
Canadian Electrical Code, part I, CC22.1
–
IEC 364, part 1 through part 7
•
The bottom and sides of the cable voice adapter must remain unobstructed to ensure adequate
airflow and to prevent the unit from overheating.
•
The cable voice adapter should have at least 3 inches of clearance at the rear to allow sufficient
space for the connected cables without crimping.
Caution
Do not install the cable voice adapter on the floor or an uneven or soft surface.
(Optional) Ensure the data channel frequency has a sufficient RF signal level to
meet your cable plant specifications and verify the RF input levels relative to a
nearby analog video level:
•
Check the RF signal with an RF power meter at the Type F coax connector to
verify the DOCSIS system signal.
•
Verify the nearby analog video signal is within the correct range—0 to +15
dBmV for most CATV systems.
Test the installation:
•
Establish an Internet connection and request data from a PC connected to the
cable voice adapter.
•
Make a VoIP telephone call.
“Verifying Installation”
section on page 3-17
Table 3-1
Installation Checklist (continued)
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