iPECS eMG800
Hardware Description and Installation Manual
Issue 1.8
33
4.2.8
DSIU (Digital and Single Line Interface Unit) Wiring
The DSIU is included on the MPB and provides six (6) Digital Terminal (DKT-1 to 6) ports and six (6) Single
Line (SLT 1 to 6) ports.
The DSIU SLT ports support FSK (ITU-T V.23 or Bell 202) or DTMF (ITU-T Q.23) Caller ID to the SLT.
The SLT ports provide the -48 VDC source, current limited to 20 mA, to operate the SLT, and support Message
Wait Indication, DTMF or Pulse Dial, Polarity reversal, sinusoidal ring generator.
The SLT and DKT ports of the DSIU are terminated in RJ45 connectors located in the front panel of the board.
Note the DSIU is NOT field replaceable.
Table 4.2.8-1 RJ45 Pin Assignment, DKT 1 to 6 Connectors
CONNECTOR
PIN
SIGNAL NAME
RJ45
1,2,3
Not used
4
DKT-T
5
DKT-R
6,7,8
Not used
Table 4.2.8-2 RJ45 Pin Assignment, SLT 1 to 6 Connectors
CONNECTOR
PIN
SIGNAL NAME
RJ45
1,2,3
Not used
4
SLT-T
5
SLT-R
6,7,8
Not used
Refer to the pin-out charts above,
Wire the DKT and SLT ports of the DSIU to the termination point of the appropriate DKT or SLT. For
information on terminal wiring.
Tag or number wiring for maintenance
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
DTR
TD
CTS
RD
RTS
DSR
SG
DSR
RD
RTS
TD
CTS
DTR
SG
LIK MODULE
DB-9 RS-232
TERMINATIONS
TYPICAL TERMINAL
DB-9 RS-232
TERMINATIONS
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
DTR
TD
CTS
RD
RTS
DSR
SG
LIK MODULE
DB-9 RS-232
TERMINATIONS
PSU
DB-9 RS-232
TERMINATIONS
DTR
TD
CTS
RD
RTS
DSR
SG
LIP-
800
0
Seri
es
Key
set
iPECS eMG800
DB-9 RS-232
Termination
s
