Specifications

Cisco ONS 15327 Product Overview
Cards and Card Slots
4
Cisco ONS 15327 Product Overview, R3.3
June 2002
XTC Card
The XTC is the common-control card for the ONS 15327 and contains the
electrical tributary circuitry for connecting DS-N traffic. The ONS 15327
provides two XTC cards. The XTC-28-3 card supports 28 DS-1s and three DS-3s.
Figure 4 XTC 28-3 card faceplate
The XTC-14 card supports 14 DS-1s.
Figure 5 XTC-14 card faceplate
Timing and Control Functions
The XTC houses the central intelligence of the ONS 15327 and combines timing,
control, and switching functions. It performs:
• System initialization
• Provisioning
• Alarm reporting
• Maintenance
• Diagnostics
• IP address detection and resolution
• Timing, compliant with Telcordia requirements
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