A-11
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
FRSM-2T3E3 Specifications
FRSM-2T3E3 T3 Line
The T3 line characteristics appear in
Table A-13
.
T3 Framer Level
For the framing characteristics of T3 operation, the FRSM-2T3E3:
•
Supports C-bit parity and M13 DS3 format.
•
Frames to a DS3 signal with a maximum average reframe time that meets the requirements set by
TR-TSY-000009 and GR-499-CORE.
•
Detects the alarm indication signal (AIS) in milliseconds in the presence of a 10
-3
bit error rate.
•
When in-frame, indicates M-bit or F-bit framing errors as well as P-bit errors. In C-bit parity mode,
it also indicates both C-bit parity errors and far end block errors.
Table A-12 FRSM-2T3E3 Front Card Physical Characteristics
Feature
Significance or Value
Power
–48 VDC, 60W (estimated)
Card Status Indicator LEDs
Active (Green),
Failed (Red),
Standby (Yellow)
Line Status Indicator LEDs
Active & Okay (Green),
Active & Local Alarm (Red),
Active & Remote Alarm (Yellow)
Reliability
> 85000 hours MTBF (target)
Card Size
Front card: 7.25 inches by 15.83 inches (18.42 cm by
42.75 cm)
Back cards: 7.25 inches by 4.125 inches (18.42 cm by
10.48 cm)
Table A-13 T3 Line Level
Feature
Significance or Value
Number of T3 Lines
Two
Line Interface
Connector
75 ohm BNC
Line Rate
44.736 Mbps +/- 20 ppm
Line Coding
B3ZS
Transmit Timing
Normal or Loop timed
Input Jitter Tolerance
Per GR-499-CORE, ITU-T G.824
Output Jitter
0.05 UI maximum with jitter-free input clock
Output Pulse
Per ANSI T1.102