13-4
Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 13 Card Reference
XTC Cards (XTC-28-3/XTC-14)
Figure 13-2 XTC-28-3 card faceplate
Figure 13-3 XTC-14 card faceplate
13.3.1.1 XTC Front Panel
The XTC cards have an alarm cutoff (ACO) button, an RJ-45 LAN port, an EIA/TIA-232 TL1 (CRAFT)
interface port, and a LAMP TEST button. The XTC-28-3 front panel has 12 LEDs, and the XTC-14 front
panel has 11. The following list describes each LED:
•
The red FAIL LED indicates an XTC hardware problem. Replace the unit if the FAIL LED persists.
•
The ACT/STBY (Active/Standby) LED indicates whether the XTC is active and providing timing
reference and shelf control (green), or is in standby to the active XTC (yellow).
•
The green SYNC LED illuminates when the active XTC qualifies a timing reference from the optical
facility or an external BITS input.
•
The ACO LED indicates that the ACO function has been activated. To activate the ACO, press the
ACO button on the front panel.
•
The DS3 SF LED (XTC-28-3 only) indicates a signal fail/problem with one or more of the DS-3
interfaces.
•
The DS1 SF LED indicates a signal fail/problem with one or more of the DS-1 interfaces.
•
The green PWR A and PWR B LEDs illuminate when adequate power voltage is being received by
the PWR A and PWR B connections on the MIC cards.
•
The CRIT LED illuminates when a critical alarm is present.
•
The MAJ LED illuminates when a major alarm is present.
•
The MIN LED illuminates when a minor alarm is present.
•
The red REM LED illuminates when a remote alarm is present in one or several of the remote
terminals.
13.3.1.2 Support for DS-1 and DS-3
The XTC cards contain the circuitry for connecting DS-1s. The XTC-28-3 also contains the circuitry for
connecting DS-3s. The XTC-28-3 supports 28 DS-1s and 3 DS-3s. The XTC-14 supports 14 DS-1s. The
DS-1 circuitry on the XTC cards maps each of the received DS-1 signals into VT1.5s and concatenates
these virtual tributaries (VTs) into one STS-1. Full VT1.5 grooming is supported.
45892
ACO
LAN
CRAFT
XTC-28-3
LAMP
TEST
FAIL
ACT/STBY
SYNC
ACO
DS3 SF
DS1 SF
PWR A
PWR B
CRIT
MAJ
MIN
REM
45893
ACO
LAN
CRAFT
XTC-14
LAMP
TEST
FAIL
ACT/STBY
SYNC
ACO
DS1 SF
PWR A
PWR B
CRIT
MAJ
MIN
REM
Summary of Contents for ONS 15327
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Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
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