Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Control Unit Problems
Page 4-88
800 NI-BRI Module Problems
Table 4-7 Continued
Continued on next page
Result
Code
Description Corrective Action
CO-D
continued
The possible causes for this error are:
■ Outgoing data calls are not possible.
(Error identified at Outgoing Data Call Test,
Step 3)
■ Incoming data calls are not possible.
(Error identified at Incoming Data Call Test,
Step 2)
If MLH is expected, the possible causes are:
— CO provisioning does not allow incoming
data calls, but either the DN or MLHG DN
has been verified to be correct.
IF MLH is not expected, the possible cause is:
— Provisioning on the facility does not allow
incoming data calls.
■ Provisioning on the facility does not allow
incoming data calls.
(Error identified at Outgoing Data Call Test,
Step 3 and/or Incomig Voice Call Test Step 2.)
This condition may or may not be detected by any
single manual test. Therefore, a sequence of calls
may be necessary to determine the condition for the
failure.