ADC UTU-701C User Manual
Abbreviations
700-701-100-02
70
August 9, 2002
UTU-701 and ETU-751 List 1
A
BBREVIATIONS
AIS
Alarm Indication Signal
LL
Local Loopback
ALM
Alarm
LOC
Local
ANSI
American National Standards Institute
LOC
Loss of Clock
AWG
American Wire Gage
LOSW
Loss of Sync Word
BER
Bit Error Rate
LPBK
Loopback
C
Centigrade
LTU
Line Termination Unit
COM
Communication
M34F
M-type 34-pin Female Connector
CRC
Cyclic Redundancy Check
MAR
Margin
CTS
Clear To Send
Mbps
Megabits per second
D15F
D-type 15-pin Female Connector
MHz
Megahertz
D25F
D-type 25-pin Female Connector
mm
millimeter
D9F
D-type 9-pin Female Connector
NC
Normally Closed
dB
Decibel
NO
Normally Open
DCE
Data Communications Equipment
NTU
Network Termination Unit
Det
Detector
NVRAM Non-volatile Random Access Memory
dnl
Download
Nx64k
Number (N) of 64 kbps DS0 time slots
mapped to a data port.
mapped to a data port.
DS0
Digital Service, Level 0 (64 kbps)
Op
Operation
DSR
Data Set Ready
PFO
Power Feed Open
DTE
Data Terminal Equipment
PFS
Power Feed Short
DTR
Data Terminal Ready
ppm
pulse per minute
EMC
Electromagnetic Compliance
PRBS
Pseudorandom Bit Sequence
EMI
Electromagnetic Interference
RAM
Random Access Memory
EMS
Exchange Office Management Shelf
REM
Remote
EMU
Exchange Office Management Unit
RL
Remote Loopback
ES
Errored Second
RLSD
Received Line Signal Detector
ETR
ETSI Technical Report
RTS
Ready to Send
ETSI
European Telecommunications Standards
Institute
Institute
S/W
Software
ETU
ETSI Termination Unit
SD
Transmit Data
EXT
External
ST
Send Timing
H/W
Hardware
SYNC
Synchronization
HDSL
High-bit-rate Digital Subscriber Line
TM
Test Mode
Hz
Hertz
TT
Terminal Timing
I/F
Interface
UAS
Unavailable Seconds
ID
Identification
UTU
Universal Termination Unit
INT
Internal
V
Volts
kbps
kilobytes per second
Vdc
Volts direct current
km
kilometers
VT100
A terminal-emulation system
LED
Light Emitting Diode
W
Watts