GDK-100
DIGITAL KEY TELEPHONE SYSTEM
77
shorting traps (short pin) on the related interface circuit.
3. CN104/R168 are on the 1
st
interface circuit, CN105/R169 on the 2
nd
interface circuit,
CN106/R170 on the 3
rd
interface circuit and CN107/R171 on 4
th
interface circuit.
LCOB can be installed in any one of slot No. 1-12.
Analog CO line boards are limited by maximum 32 analog lines in a system.
Add-on boards: DTRU, CPTU/A, CPTU/B, CMU
Figure 3.4.5.1
CMU & CPTU, DTRU Installation
3.4.5.2 AC15 Board Installation - UK
The AC15 board provides 3 private interface circuits, each line supports AC15a signaling.
It is designed to comply with the UK specification and application, so it may not suitable for the other
national specification and/or application.
Function of LED
LED
Function
Remark
LED1
The status of line 1, ON: in use
LED2
The status of line 2, ON: in use
LED3
The status of line 3, ON: in use
Function of connectors
Connector
Function
Remark
CN1 and CN2
DTRU connection
CN3
RJ21 type male connector for CO line connection.
Clause 3.5
Insert Figure 3.6a in the existing Manual here