Ntak93 Self-Test - Avaya Nortel Communication Server 1000 Reference

NTAK09 1.5 Mb DTI/PRI card
When the self-test is completed, the LED remains red until the clock controller is enabled.
When enabled, the clock controller LED either turns green or flashes green.

NTAK93 self-test

The NTAK93 DCHI daughterboard LED is the bottom LED on the faceplate of the NTAK09 DTI/
PRI card.
The NTAK93 DCHI daughterboard does not perform a self-test when power is applied to it.
When power is applied, it turns red and remain steadily lit, indicating the DCH is disabled.
When the DCH is enabled, the LED turns green and remains steadily lit.
Self-tests of the NTAK93 daughterboard are invoked manually by commands in LD 96.
DTI/PRI local self-test
The local self-test, also called a local loopback test, checks speech path continuity, zero code
suppression, remote alarm detection, and A & B bit signalling. This test is performed manually
on a per-loop or per-channel basis. The local loopback test performs a local logical loopback
and does not require any external loopback of the T1 signal.
Restrictions and limitations
The DCHI and DTI/PRI must be disabled before performing the self-test on the entire DTI/PRI
card. Individual channels must be disabled before performing a self test on a particular
channel.
Power requirements
The DTI/PRI obtains its power from the backplane, and draws less than 2 amps on +5 V, 50
mA on +12 V and 50 mA on –12 V.
Foreign and surge voltage protection
Lightning protectors must be installed between an external T1 carrier facility and the system.
For public T1 facilities, this protection is provided by the local operating company. In a private
T1 facility environment (a campus, for example), the NTAK92 protection assembly can be
used.
The NTAK09 circuit card conforms to safety and performance standards for foreign and surge
voltage protection in an internal environment.
494 Circuit Card Reference
Comments? infodev@avaya.com
July 2011