Cisco MGX 8230 Specifications Page 236

  • Download
  • Add to my manuals
  • Print
  • Page
    / 282
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 235
A-4
Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001
Appendix A Technical Specifications
MGX 8230 Processor Switching Module Specifications
LEDs on PXM front
card:
LEDs display status, but
alarm history is a switch.
Status for the card:
Green means active.
Red means failed.
Yellow indicates the standby card.
LAN activity: flashing green indicates activity.
Node alarm:
Red indicates major alarm.
Yellow indicates minor alarm.
Node power (note that each AC power supply also has an
LED):
DC OK A is green for okay or red for trouble.
DC OK B is green for okay or red for trouble.
Alarm history: ACO
Port interface (per port):
Green means active and okay.
Red means active and local alarm.
Yellow means active and remote alarm.
No light means inactive or not provided.
LEDs on back cards: Green means active. No light means inactive or not provided.
Stratum 4
synchronization (internal
only):
8 KHz clock derived from:
Internal 8 KHz clock (10 ppm).
Stratum 3
synchronization (internal
and external):
Free-Run Accuracy of +/- 4.6 ppm (+/- 7 Hz @
1.544 MHz)
Holdover stability of less than 255 slips (+/- .37 ppm ) for
the initial 24 hours of holdover.
Upon clock switchover, MTIE (Maximum Time Interval
Error) shall not exceed 1 microsecond. The rate of phase
change shall not exceed 81 ns in 1.326 ms interval.
Pull-in range of accuracy +/- 4.6 ppm.
Provide jitter filtering and tolerate jitter according to
AT&T T1.5 and ITU G.824 specifications.
Declare a bad reference if LOS detected >50 ms or error
burst of duration >2.5 sec.
BITS clock interface: T1 and E1 with an RJ-45 connector.
Note: older systems with a PXM-UI back card have an SMB
connector for E1.
Table A-2 PXM Specifications (continued)
Category Description
Page view 235
1 ... 235 236 237 ... 282

Comments to this Manuals

No comments