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Testability and diagnostics
553-2901-200
Standard 11.00
NTD12 Dual-port DTI/PRI card description and installation
The DDP card supports all current QPC720 testing and maintenance
functions through the following procedures:
•
Selftest upon power up or reset;
•
Signalling test performed in the OVL 30;
•
Loopback tests, self tests, and continuity tests performed by OVL 60
and OVL 45;
•
The D-Channel (MSDL, DCHI, DDCH) maintenance is supported
by OVL 96.
August 1996
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