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Chapter 9 Specifications
SSU-2000e Shelf Specifications
322
SSU-2000e Technical Reference
12713140-003-2 Revision E.01 – January 2007
SSU-2000e Shelf Specifications
General Specifications
The operating limits for the unit are set to factory default settings as listed in
details the general specifications for a fully populated unit configured with
SSU function. Inputs apply only to the SSU function.
Table 9-1. General Specifications
Characteristics
Specification
General
Architecture
Main Shelf: 2 clocks, 1 Communications module and 9 mixed
I/O modules
Expansion Shelf: 14 output modules and 2 buffer modules
Up to 4 Expansion Shelves per system
Long Term Frequency
(Accuracy)
Stratum 1 PRS per (ANSI) T1.101 and ITU-T G.811
Clock Performance
Meets requirements of the Telcordia Technologies (formerly
Bellcore) document GR-1244-CORE
Reference Signals
Determined by the type of Input module:
GPS navigation signal
DS1 – D4 or ESF
E1 – CAS or CCS
Clock – 1 MHz, 1.544 MHz, 2048 kHz, 5 MHz, 10 MHz
Composite Clock
Sync Status Messaging (SSM)
Compliant with SSM specifications per T1X1.3 TR33, (ANSI)
T1.101-1999, and Telcordia Technologies GR-253 and
378-CORE and with applicable parts of ITU-T G.781
Event Log
Stores at least 500 event history including timestamp, event
type, event/alarm level, and condition causing the event; stores
the last 10 events in non-volatile memory.
Configuration Data
Firmware stores factory configuration, customer configuration,
current configuration, and board identification information, and
provides a command which can be used to restore saved
settings.
Alarm Levels
Commands can set alarm level to IGNORE, REPORT, MINOR,
MAJOR, and CRITICAL. MINOR and MAJOR alarms can be
elevated to the next higher level after a user-defined time period.
Содержание SDU-2000e
Страница 10: ...Table of Contents 10 SSU 2000e Technical Reference 12713140 003 2 Revision E 01 January 2007 ...
Страница 242: ...Chapter 4 NTP and SNMP SNMP Protocol 242 SSU 2000e Technical Reference 12713140 003 2 Revision E 01 January 2007 ...
Страница 354: ...Index Z Z 354 SSU 2000e Technical Reference 12713140 003 2 Revision E 01 January 2007 ...