5.26.7. Abbreviations 
Table 17. Abbreviations
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AECB
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=
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Atlantic External Clock Box
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AICB
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=
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Atlantic Internal Clock Box
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AMO
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=
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Administration & Maintenance Order
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APT3
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=
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Adaptor Plug T3 clock output (now T4)
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ATM
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=
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Asynchronous Transfer Mode
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BALUN
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=
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Balancing Unit/conversion from 120 ohms symm.
to 50 ohms asymm.
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CBO
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=
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Continuous Bitstream Operation, = voice, fax,
multimedia
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|
CGM, CGMC
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=
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Clock Generator Module (Q9606) corresponds to
SCG
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CMI
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=
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Cordless Multicell Integration
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DECT
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=
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Digital Enhanced Cordless Telephony
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DSC80
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=
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Dataprocessor Stream Control 80 CMX
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|
DSCX
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=
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Dataprocessor Stream Control 80 ECX
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DSCXL
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=
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Dataprocessor Stream Control
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ETSI
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=
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European Telecommunication Standardization Institute
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GPS
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=
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Global Positioning System
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HG3575
|
=
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Gateway HG 3575, IPDA controller, HW = NCUI4
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HRST
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=
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Hard Restart
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HW ID
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=
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Hardware code in H = hexadecimal representation
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IP
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=
|
Internet Protocol
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IPDA
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=
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IP Distributed Architecture, H4k access point
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ISS
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=
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Inter System Synchronization, cordless seamless
handover network-wide
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ITU
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=
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International Telecommunication Union
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MTSCG
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=
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Memory Time Switch Clock Generator (Q2224)
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|
MCM
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=
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Management and Control Module
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NMS
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=
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Network Management System
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NTP
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=
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Network Time Protocol
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OCXO
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=
|
Oven Controlled Xtal Oscillator, i.e. temperature
stabilized
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|
PDH
|
=
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Plesiochronous Digital Hierarchy
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|
P I
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=
|
Proportional Integral (regulator)
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|
PLL
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=
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Phase locked loop
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|
REFTA
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=
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Referenz Takt (reference clock) Priority list,
AMO REFTA
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|
RTM
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=
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Real Time Module, part of the cCPI controller
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SASE
|
=
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Stand-Alone Synchronization Element (ETSI)
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SCG
|
=
|
Small Clock Generator (on SCC board)
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SDH
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=
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Synchronous Digital Hierarchy
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SES
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=
|
Severely Errored Second
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SLCSS
|
=
|
Subscriber Line Cordless Synchronization Support
(plug-in module)
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|
SMD
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=
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Subscriber Module Digital (opposite of TMD =
Trunk Module D).
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|
SSU
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=
|
Synchronization Supply Unit (synonym for SASE9
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TCVCXO
|
=
|
Temperature-Compensated Voltage Controlled Xtal
Oscillator
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|
T3
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=
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2.048 MHz input clock according to ITU G.703/10,
previously T3-an
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|
T4
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=
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2.048 MHz output clock according to ITU G.703/10,
previously T3-ab
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VCXO
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=
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Voltage-Controlled Xtal Oscillator
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|
VoIP
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=
|
Voice transmission over the Internet protocol
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|
Xtal
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=
|
am. for quartz oscillator
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