A-3
Cisco ONS 15454 Reference Manual, R8.0
April 2008
AppendixA Hardware Specifications
A.1.7 Alarm Interface
•Hardware flow control
•TCC2/TCC2P: EIA/TIA-232 DB-9 type connector
A.1.7 Alarm InterfaceThe ONS 15454 alarm interface has the following specifications:
•Visual: Critical, Major, Minor, Remote
•Audible: Critical, Major, Minor, Remote
•Alarm contacts: 0.045 mm, –48 V, 50 mA
•Backplane access: Alarm pin fields
A.1.8 EIA InterfaceThe ONS 15454 EIA interface has the following specifications:
•SMB: AMP #415504-3 75-ohm, 4-leg connectors
•BNC: Trompeter #UCBJ224 75-ohm 4 leg connector (King and ITT are also compatible)
•AMP Champ: AMP#552246-1 with #552562-2 bail locks
A.1.9 BITS InterfaceThe ONS 15454 building integrated timing supply (BITS) interface has the following specifications:
•2 DS-1 BITS inputs
•2 derived DS-1 outputs
•Backplane access: BITS pin field
A.1.10 System TimingThe ONS 15454 has the following system timing specifications:
•Stratum 3 per Telcordia GR-253-CORE
•Free running accuracy: +/–4.6 ppm
•Holdover stability: 3.7 x10–7 per day, including temperature (< 255 slips in first 24 hours)
•Reference: External BITS, line, internal
A.1.11 System PowerThe ONS 15454 has the following power specifications:
•Input power: –48 VDC
•Power consumption: Configuration dependent; 72 W (fan tray only)
•Power requirements: –40.5 to –57 VDC