Monitoring The B Channel Leds; Evaluating Symptoms And Solutions - 3Com Impact IQ 3C882 User Manual

Monitoring the B Channel LEDs

Attempt to place a call and observe the B channel LED(s). The
B1 and B2 LEDs flash amber for a voice call or green for a
data call during the call establishment phase. They then
remain continuously amber or green once the connection is
established. If they do not remain continuously amber or
green, refer to the "Evaluating Symptoms and Solutions"
section.

Evaluating Symptoms and Solutions

Table 7-1 lists symptoms of common problems, possible
causes, and possible solutions.
Table 7-1 Symptoms, Causes, and Solutions
Symptom Possible Cause
TEST LED remains An internal failure.
lit for more than a
few minutes
D channel remains Poor physical connection to
lit for more than a the local telephone company.
few minutes
D channel A mismatch between the
continues to flash settings of the ISDN line and
for more than a the 3C882 ISDN modem
few minutes configuration.
Calls cannot be If you cannot place a calls,
placed from there may be a problem with
analog equipment the configuration of your
ISDN line.
Calls from that analog port
may be blocked.
(continued)
Evaluating Symptoms and Solutions
Solution
Notify 3Com Technical Support that
the 3C882 ISDN modem has failed the
self-test.
If the telephone wires at your site
appear to be satisfactory, call your
local telephone company for repair of
telephone company equipment and
troubleshooting assistance.
Verify the telephone number and
SPID (if required). If the D channel
LED continues to flash, call your
telephone company to verify the SPID
and telephone number and ensure
that the telephone company has
configured the ISDN line properly
(refer to Appendix A).
Call the telephone company and have
it verify that your line is configured
for circuit-switched voice and data
service.
From the Configuration dialog box,
check the Phone Port 1 and Phone
Port 2 boxes which are used for voice
call routing. Ensure that the correct
Phone Port box for that port is
checked.
7-3