ZyXEL Communications U-336S - Page 157

Connector Pinouts 143
Signal
Pin
ITU-TSS
Signal
Name
EIA
Signal
Name
Pin/Signal
Description
Direction
DTE-DCE
(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. ←