130
NN
Unassigned
5.5
X.21 DB25(M) to DB15(F) adaptor Cable
For X.21 application, we must use the DB-25 to DB-15 adaptor cable for
connects to a X.21 DTE DB-15 male cable.
The pin out of cable on DB-25(male) Connector to DB-15(Female) (X.21)
Connector
DB-25
Pin
Signal DB-15 (X.21) Pin Description
1
FGND 1
Protective Ground
7
GND
8
Signal Ground
2
T
2
Transmit Data
14
T
9
Transmit Data
3
R
4
Receive Data
16
R
11
Receive Data
4
C
3
Request To Send
19
C
10
Request To Send
8
I
5
Data Carrier Detect
10
I
12
Data Carrier Detect
17
S
6
Receive Clock
9
S
13
Receive Clock
All signals are balanced. Meaning there is always a pair (+/-) for each
signal, like used in RS422. The X.21 signals are the same as RS422, so
please refer to RS422 for the exact details.
The front view of DB-25(M) connector and DB-15(F) connector on this
cable:
Содержание SHRM03b TDM Series
Страница 1: ...SHRM03b G SHDSL bis TDM Series 4U 19 Chassis ...
Страница 2: ......
Страница 23: ...23 When using 4 wire 2 pairs mode only the upper side of RJ 45 connector can be used ...
Страница 37: ...37 3 5 1 Menu Tree diagram 2 wire mode ...
Страница 38: ...38 3 5 2 Menu Tree diagram 4 wire mode ...
Страница 52: ...52 75 Ohms 120 Ohms BNC Connector RJ 45 Connector ...
Страница 59: ...59 ...
Страница 78: ...78 ...
Страница 81: ...81 3 8 2 1 E1 interface 2 wire mode 3 8 2 2 E1 interface 4 wire mode 3 8 2 3 Series interface 2 wire mode ...
Страница 82: ...82 3 8 2 4 Series interface 4 wire mode 3 8 2 5 Ethernet interface 2 wire mode ...
Страница 83: ...83 3 8 2 6 Ethernet interface 4 wire mode ...
Страница 84: ...84 3 8 2 7 T1 interface 2 wire mode 3 8 2 8 T1 interface 4 wire mode ...
Страница 86: ...86 3 8 3 3 Ethernet interface For Ethernet interface model ...
Страница 87: ...87 3 8 3 4 T1 interface For T1 interface model ...
Страница 94: ...94 3 12 Exit To exit the console configuration mode cursor down to exit and press Enter Answer y es to confirm ...
Страница 105: ...105 Ethernet Rate Auto Speed Duplex ...
Страница 113: ...113 side Click Reset button and the values will be set to default ...
Страница 116: ...116 4 5 7 4 SNMP All SNMP parameter must setup on this item ...
Страница 128: ...128 cable ...
Страница 131: ...131 ...
Страница 136: ...136 ...
Страница 137: ......
Страница 138: ......