Appendix C - Connector Pinouts
C-1
Appendix C - Connector Pinouts
Phone Jack Pinouts
The Omni 288S is equipped with two RJ11 phone jacks:
1. one for the dail-up line connection (LINE)
2. one for an optional connection to a phone set (PHONE)
The signals for these pins are:
1
A
2
RING
3
TIP
4
A1
The signals A and A1 are used with the KTS (Key Telephone Systems).
PC Serial Port Pinouts
Signal
Pin
ITU-TSS
Signal Name
EIA
Signal Name
Pin/Signal
Description
Direction
DTE-DCE
1
101
AA
Protective Ground (GND).
2
103
BA
Transmitted Data(TXD).
→
3
104
BB
Received Data(RXD).
←
4
105
CA
Request To Send (RTS).
→
5
106
CB
Clear To Send (CTS).
←
6
107
CC
Data Set Ready (DSR).
←
7
102
AB
Signal Ground (GND).
8
109
CF
Data Carrier Detected
(DCD).
←
15
114
DB
Transmit Clock Signal
(source: DCE).
←
17
115
DD
Synchronous Receive Clock.
←
18
141
Local Analog Loopback Test.
→
20
108/2
108/1
CD
Data Terminal Ready (DTR).
Connect DCE to line
→
21
140
Remote Digital Loop Test.
→
22
125
CE
Ring Indicator(RI).
←
24
113
DA
Transmit Clock Signal
(source: DTE).
→
25
142
Test Indicator.
←