ZyXEL Communications U-336E - Page 133

Connector Pinouts 121
Signal
Pin
ITU-TSS
Signal
Name
EIA
Signal
Name
Pin/Signal
Description
Direction
DTE-DCE
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.
←