LG GDK-20W User Manual

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GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM     
 
 
15
 
 
2.4 SYSTEM COMPONENTS 
 
 
Item 
Slot 
Position 
Circuit 
Number 
Description Remark 
GDK-20W KSU(MBU) 
 
 
  4DKT + 2SLT + 1 WTI 
 
DVIB 
Digital Voice Interface 
 
DVIBE 
Digital Voice Interface + 
DTMF Receiver 2EA 
 
LCOB4 
2,3 
Loop Start CO Interface 
PRU4, PRCPTU 
LCOBA 
2,3 
Loop Start CO Interface 
PRU4, PRCPTU 
PRU4 LCOB4/ 
LCOBA 
Polarity Detect 4 ports 
 
PRCPTU4 LCOB4/ 
LCOBA 
Polarity Detect 4 ports + 
Call Progress Tone Detect 4 ports 
 
LCOB 
2,3 
Loop Start CO Interface 
 
LCOBE(SP) 
2,3 
Loop Start CO Interface 
(Call Progress Tone Detect 2 ports) 
 
LCOBE(w/PRU) 2,3 
Loop 
Start CO Interface 
(Polarity Detect 2 ports) 
 
LCOB2 
2,3 
Loop Start CO Interface 
 
STIB 
2,3 
1(2B) 
ISDN 1So/To Interface 
 
STIB2 
2,3 
2(4B) 
ISDN 1So/To + 1To Interface 
 
PMU 
 
Program Module Unit 
 
WTIB 
Wireless Terminal Interface(2 WTI) 
 
MFB 
 
Battery Changing, RS-232C, Auto FAX   
DVEU DVIB/ 
DVIBE 
 
Voice Memory Expansion Unit