User's Manual
GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM     
9
1.3 ABBREVIATIONS 
For the purposes of this manual, following abbreviations are applied: 
330-SSC, 340-SSC  Single-Slot Charger 
AC  Authentication Code 
ADPCM    Adaptive Differential Pulse Code Modulation 
BER  Bit Error Ratio 
CCITT    International Telegraph and Telephone Consultative Committee 
dBm      dB relative to 1 milliwatt 
DECT   Digital Enhanced Cordless Telecommunications 
ESD  Electrostatic Sensitive Discharge 
FP  Fixed Part 
GAP   Generic Access Profile 
GDC-200B  Base Station 
GDC-335H, GDC-340H Wireless Terminal 
GFSK   Gaussian Frequency Shift Keying 
IPEI  International Portable Equipment Identity 
IPUI  International Portable User Identity 
KSU  Key Service Unit 
LED  Light Emitting Diode 
MBU  Main Board Unit 
PARK   Portable Access Right Key 
PCB  Printed Circuit Board 
PP  Portable Part 
PSTN   Public Switched Telephone Network 
RF  Radio Frequency 
RFPI      Radio Fixed Part Identity 
TDD  Time Division Duplex 
TDMA    Time Division Multiple Access 
WTIB   Wireless Terminal Interface Board 
Notice 1:
  If this equipment is not equipped with a standby battery supply it will not be possible to 
make calls to the emergency services when the power fails. Alternative arrangements 
should be made for access to emergency services. 
Notice 2: 
  The equipment has been approved to [Commission Decision "CTR21"]for pan-European single terminal 
connection to the Public Switched Telephone Network(PSTN). However, due to differences between the 
individual PSTNs provided in different countries the approval does not, of itself, give an unconditional 
assurance of successful operation on every PSTN network termination point. 
  In the event of problems, you should contact your equipment supplier in the first instance." 










