User's Manual

Table Of Contents
Page 4–100
18 September 2007
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-128 High-speed Data Terminal
HSD is
operating
outside the
normal
environmen
tal
specificatio
ns
Channel card
temperature fault
Activate report 21 or 23 Check channel card
temperature;
temperatures of over 50° C
to 60° C may cause the
HSD or HSD-X to shut
down.
Check that the fan tray is
operational.
Verify that the tray plug
distribution is the same as
presented in the
installation requirements.
Calls do not
complete
and
connection
is not
established
Channel Congestion (fault
code 2024)
Activate report 21
and 23
Wait five minutes and try
the call again.
Contact the LES to verify
congestion. To contact the
LES operator, dial 33 #.
No call request sent Activate report 21
and 23
Verify that the call dial
string is correct; Pressing #
at the end of the dialing
string signals the system to
“send” the call.
Check that the HSD or
HSD-X power LED flashes
on and off (1 Hz) during a
call request.
Check that the ISDN cable
is connected correctly and
securely.
Table 4–27. Troubleshooting and Fault Isolation
Fault Description
Maintenance
Report
Check