Cisco ubr924 Installation And Startup page 17

Verify Installation (continued)
IP Telephony
Note: The router must be configured to support voice and use Cisco IOS Release 12.0(5)T or higher to support
fax.
LED Status
V OK Voice status LED is
off for a router
configured to
support voice.
V1 or V2 Voice port LED is
off when a call on
the port is initiated
for a router
configured to
support voice.
Possible Problem
VoIP system configuration problem.
Bad telephone or fax machine
connection.
Bad cable.
Problem with equipment configuration
Suggested Action
Contact your provisioning or billing
administrator or customer service
department. If your provisioning or
billing system is designed to support
automatic feature upgrades, and the
router's cable MAC address is
already in the billing system and
configured for use with voice, ask to
have the router refreshed with the
correct voice configuration.
Note: This procedure can take
several minutes.
Reseat the RJ-11 to RJ-11 cable at
both ends.
Use a different cable.
For a telephone, make sure a
pushbutton dial set is used.
For an external fax machine, make
sure the device is on. If fax software
is used, make sure the data mode is
not used. For fax, also make sure
you are using Cisco IOS Release
12.0(5)T or higher.
If a two-line telephone is connected
to the router, make sure it is
connected to the V1+V2 rear
connector.
If multiple telephones or fax
machines are connected to a
telephone line, make sure the sum of
the REN of all devices on the
telephone line does not exceed five.
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