Appendix C - Connector Pinouts; Phone Jack Pinouts; Pc Serial Port Pinouts - ZyXEL Communications Omni 288S User Manual

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 ITU-TSS
Pin Signal Name
1 101
2 103
3 104
4 105
5 106
6 107
7 102
8 109
15 114
17 115
18 141
20 108/2
108/1
21 140
22 125
24 113
25 142
Appendix C - Connector Pinouts
EIA
Signal Name
AA
BA
BB
CA
CB
CC
AB
CF
DB
DD
CD
CE
DA
C-1
Pin/Signal
Description
Protective Ground (GND).
Transmitted Data(TXD).
Received Data(RXD).
Request To Send (RTS).
Clear To Send (CTS).
Data Set Ready (DSR).
Signal Ground (GND).
Data Carrier Detected
(DCD).
Transmit Clock Signal
(source: DCE).
Synchronous Receive Clock.
Local Analog Loopback Test.
Data Terminal Ready (DTR).
Connect DCE to line
Remote Digital Loop Test.
Ring Indicator(RI).
Transmit Clock Signal
(source: DTE).
Test Indicator.
Direction
DTE-DCE