User's Manual
GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM     
11
2.2 SYSTEM CAPACITY 
The following Table and Chart provide system capacities and display the system's configuration flexibility. 
Table 2.2.1 System Capacities 
Description  Basic & Expansion  Total 
Time Slots    96 
CO Line Ports 
Max. 8 (analog CO and/or 
 ISDN BRI) 
Max direct Station connections 
6(+4 via 2B modules) 
Max Stations via 2B modules 
4 
Max Stations via ISDN So bus   
4 
Max DECT terminals 
 20 
DSS/DLS Consoles per station 
0 
Attendant Positions  1-System 
Intercom Links 
Non-blocking 
Paging 
  -. All Call 
 -. Internal 
1 zone 
2 zones 
Station Speed Dial  20/station, 24 digits each  20 
System Speed Dial  24 digits each  79 
Last Number Redial 
32 digits 
Music Source Inputs  2/PMU  2 
External Control Contacts  1/MBU, 1/MFB  2 
Alarm Input  1/MBU  1 
RS-232C Ports  1/MFB  1 
DTMF Receivers   2/PMU  2 
CO Line Groups 
4 
Intercom Groups 
4 
Conference  3-party  no limit 
  * Note 
1.  Not all maximum capacities may be achieved simultaneously. 
2. DECT terminals can be registered and used up to 20 stations. But GDK-20W system supports the only four(4) 
simultaneous calls basically because the MBU has one wireless terminal interface circuit. 
When WTIB card is installed to SLOT5, the number of simultaneous calls is increased up to the twelve(12)(One 
base station provides the four(4) simultaneous calls.). 
    The WTIB has the two(2) wireless terminal interface ports. 
3. One RS-232C port can be installed in the position of the MFB. The purpose of RS-232C port can be 
programmable in Admin station programming. 
It is recommended that the RS-232C serial cable whose length is below 10 meters is used. 










