Speech Path Diagnostic; P-Side Loop Diagnostic; Cmr Diagnostic - Nortel DMS 100 Series Maintenance Manual

Speech path diagnostic

The speech path diagnostic runs a complete check on all the XPM speech
channels for data integrity. This diagnostic checks all C-side and P-side
loop-arounds and all time slots of the speech bus. The diagnostic tests
highway mux and the PCM enable-disable gates.
The following XPM hardware components are involved in this diagnostic:
• NTMX76 circuit card
• NTMX75 circuit card
• NTMX82 PCM30 interface packlet
• speech bus

P-side loop diagnostic

The P-side loop diagnostic tests the P-side loops on the P-side interface circuit
cards. This diagnostic acts as a occurrence test on these circuit cards for the
rest of the diagnostics. This diagnostic contains the following tests:
• hardware occurrence
• P-side interface occurrence

CMR diagnostic

The NT6X78 circuit card in the RSC-M can self-diagnose. The NT6X78
circuit card contains on-board firmware. This firmware provides the correct
card level diagnostic. The diagnostic detects problems that affect service as
soon as possible.
The CMR diagnostic provides the RSC-M with both in-service and
out-of-service diagnostics. The diagnostic provides along a CMR audit that
performs the in-service diagnostic at regular intervals. This feature provides a
diagnostic interface to report CMR failures.
The in-service diagnostic provides an interface and controls on-board
firmware diagnostics. These diagnostics provide continuous testing of various
critical components of the NT6X78 circuit card. This diagnostic runs one time
each minute. An in-service audit request determines the number of times the
diagnostic runs. Operating company personnel can request the in-service
diagnostic at the MAP terminal. These diagnostic triggering techniques result
in complete in-service coverage of the NT6X78 circuit card.
The out-of-service diagnostic is a more complete test of the functionality of
important CMR hardware. This diagnostic uses some of the same on-board
firmware diagnostics as the in-service tests. This diagnostic allows a more
complete testing of all resources where normal in-service traffic and time
restrictions do not permit.
DMS-100 Family Remote Switching Center Multi-Access Maintenance Manual XPM11 and up
RSC-M trouble isolation and correction 8-31