User's Manual

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 1 2 Digital Voice Interface
DVIBE 1 2 Digital Voice Interface +
DTMF Receiver 2EA
LCOB4 2,3 4 Loop Start CO Interface PRU4, PRCPTU
LCOBA 2,3 2 Loop Start CO Interface PRU4, PRCPTU
PRU4 LCOB4/
LCOBA
4 Polarity Detect 4 ports
PRCPTU4 LCOB4/
LCOBA
4 Polarity Detect 4 ports +
Call Progress Tone Detect 4 ports
LCOB 2,3 2 Loop Start CO Interface
LCOBE(SP) 2,3 2 Loop Start CO Interface
(Call Progress Tone Detect 2 ports)
LCOBE(w/PRU) 2,3 2 Loop Start CO Interface
(Polarity Detect 2 ports)
LCOB2 2,3 4 Loop Start CO Interface
STIB 2,3 1(2B) ISDN 1So/To Interface
STIB2 2,3 2(4B) ISDN 1So/To + 1To Interface
PMU 4 Program Module Unit
WTIB 5 2 Wireless Terminal Interface(2 WTI)
MFB 6 Battery Changing, RS-232C, Auto FAX
DVEU DVIB/
DVIBE
Voice Memory Expansion Unit