ATL AM2048A OM, Руководство пользователя

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ATL TELECOM USER GUIDE
AM2048A OS/OM
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RAM Random Access Memory
SAn G.704 Timeslot 0 spare bit n
SC Square fibre connector. The SC connector features a push-pull type coupling
mechanism which allows for dense packaging. It also has a spring loaded
ferrule which resists shock, vibration, and temperature changes.
SDH Synchronous Digital Hierarchy
SELV Safe Extra Low Voltage
SNMP Simple Network Management Protocol
ST ST or straight tip. ST fibre connectors feature a bayonet style connector for
secure connections and are suitable for either multimode or singlemode cable.
TE Terminal Equipment
TSn Timeslot n
TNV Telecommunications Network Voltage
USB Universal Serial Bus
VT100 Industry standard character based terminal
V11 CCITT Recommendation V.11 Electrical characteristics for balanced double-
current interchange circuits for general use with integrated circuit equipment
in the field of data communications
V.35 CCITT Recommendation V.24 List of definitions for interchange circuits
between DTE and DCE
X.21 CCITT Recommendation X.21 Interface between DTE and DCE for synchronous
operation public data networks
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60 ATL TELECOM USER GUIDE
AM2048A OS/OM
FAW Frame Alignment Word
FC The FC or Face Contact fibre connector features a threaded keyed design. This
anti-rotation key prevents fiber endface damage. Suitable for both multimode
and singlemode cable.
FIFO First In First Out Buffer
FLASH Non-volatile read/write memory
G.703 CCITT Recommendation G.703 (1988): “Physical/electrical characteristics of
hierarchical digital interfaces”
G.704 CCITT Recommendation G.704 (1988): “Synchronous frame structures user at
primary and secondary hierarchical levels”
G.706 CCITT Recommendation G.706 (1988): “Frame alignment and CRC procedures
relating to basic frame structures defined in G.704”
G.826 CCITT Recommendation G.826 (1996) “Error performance parameters and
objectives for international, constant bit rate digital paths at or above the
primary rate”
HD 384 Electrical Installation of Buildings (IEC 60364 series, modified)
IC Integrated Circuit
IEC 61312-1 Protection against lightning electromagnetic impulse; Part 1 General Principals
ISO International Standards Organisation
LED Light Emitting Diode
LT Line termination (Same as ELU)
LVD Low Voltage Directive
M.2100 CCITT recommendation M.2100 (1995) Performance limits for bringing into
service and maintenance of international PDH paths, sections and
transmission systems.
NT Network Termination
NTU Network Terminating Unit
NTP Network Termination Point
PC Personal Computer
PCB Printed Circuit Board
PCM Pulse Code Modulation
PDH Plesiochronous Digital Hierarchy