Cisco DPC2203 User Manual page 41

Note: Use an optional cable signal splitter to add a TV, a DHCT or set-top
converter, or a VCR.
4 Test your telephone service by lifting the receiver of each attached telephone to
verify that the dial tone can be heard and that you can make and receive
telephone calls. This process may take several minutes.
Notes:
The TEL 1 and TEL 2 LED status indicators on the front panel of the cable

modem illuminate when telephony service is enabled.
The TEL 1 or the TEL 2 LED status indicators on the front panel of the cable

modem blink when the attached device is "off the hook."
4012160 Rev C
How Do I Install the Modem for Telephone Service?
41