Serial port
125
Models 2603, 2621, and 2635 User Manual
D
• OnSite Physical Connectors
Figure 85. X.21 DB-15 connector
E1/T1 (RJ-48C Connector)
The T1/E1 transmit signals are not polarity sensitive, even though they have the traditional designation of Tip
and Ring.
Table 11. T1/E1 Port
Pin No.
Signal
1
Receive (Ring)
2
Receive (Tip)
3
Shield (Receive)
4
Transmit (Ring)
5
Transmit (Tip)
6
Shield (Transmit)
7
8
6
S
Signal Timing-a
to DTE
7
-
-
-
8
Ga
DTE Common Return
-
9
T
Transmit (Data)-a
from DTE
10
C
Control-b
from DTE
11
R
Receive (Data)-b
to DTE
12
I
Indication-b
to DTE
13
S
Signal Timing-b
to DTE
14, 15
-
-
-
1 Frame Ground
2 Transmit – A
3 Control – A
4 Receive – A
5 Indication – A
6 Signal Timing – A
7
8 Signal Ground
9
10
11
12
13
14
15
Transmit – B
Control – B
Receive – B
Indication – B
Signal Timing – B
Table 10. X.21 Interface (Model 2621)
Pin No.
Circuit
Signal Name
Direction
Содержание OnSite 2603
Страница 23: ...23 Chapter 2 Product Overview Chapter contents Introduction 24 Applications Overview 25...
Страница 38: ...38 Chapter 4 Ethernet LAN Port Chapter contents Introduction 39 LAN Connections 39 Ethernet Port 39...
Страница 120: ...120 Appendix C Cable Recommendations Chapter contents Ethernet Cable 121 Adapter 121...
