ZyXEL U-336E User Manual - Page 133
Signal, ITU-TSS, Pin/Signal, Description, Direction, DTE-DCE
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Signal Pin 6 7 8 15 17 18 20 21 22 24 25 ITU-TSS Signal Name 107 EIA Signal Name CC 102 AB 109 CF 114 DB 115 DD 141 108/2 CD 108/1 140 125 CE 113 DA 142 Pin/Signal Description Direction DTE-DCE 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. ← Connector Pinouts 121
![](/manual_guide/products/zyxel-u336e-user-manual-04f1f9b/133.png)
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.
←