Citel 6000 Guia De Ligação
070707
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PINOUTs for DB25 WAN Cable
RS-232 (DB-25) Serial Connector Pinouts
Signal/Voltage
Source
Signal Designations
Pin
#
Pin
#
Signal Designations
Signal/Voltage
Source
DTE
Secondary Transmitted Data
14
1
Sheild
Common
DCE
Transmit Clock
15
2
TD Transmit Data
DTE
DCE
Secondary Receive Data
16
3
RD Received Data
DCE
DCE
Receiver Clock
17
4
RTS Request To Send
DTE
DTE
Local Loopback
18
5
CTS Clear To Send
DCE
DTE
Request To Send (Return)
19
6
DSR DCE Ready
DCE
DTE
Data Terminal Ready
20
7
Signal Ground
Common
-
Remote Loopback
21
8
DCD Rcv'd Line Signal Detect
DCE
DCE
Ring Indicator
22
9
(+) DC Test Voltage
DCE
-
Data Signal Rate Selector
23
10
(-) DC Test Voltage
DCE
DTE
Transmit Clock
24
11
Unassigned
-
DCE
Test Mode
25
12
SCF/CI Secondary Rcv'd Line
DCE
13
Secondary Clear To Send
DCE
V.35 (DB-25) Serial Connector Pinouts
Signal/Voltage
Source
Signal Designations
Pin
#
Pin
#
Signal Designations
Signal/Voltage
Source
DCE
Test Mode
25
13
-
-
DTE
External Transmit Clock (a)
24
12
Tranmit Clock (b)
DTE
-
-
23
11
External Transmit Clock (b)
DTE
-
-
22
10
-
-
DTE
Remote Loopback
21
9
Receive Clock (b)
DCE
DTE
Data Terminal Ready
20
8
Carrier Detect
DCE
-
-
19
7
Signal Ground
-
DTE
Local Loopback
18
6
Data Set Ready
DCE
DCE
Receive Clock (a)
17
5
Clear To Send
DCE
DCE
Receive Data (b)
16
4
Request To Send
DTE
DCE
Transmit Clock (a)
15
3
Receive Data (a)
DCE
DTE
Transmit Data (b)
14
2
Transmit Data (a)
DTE
1
Frame Ground
-
RS-530 (DB-25) Serial Connector Pinouts
Signal/Voltage
Source
Signal Designations
Pin
#
Pin
#
Signal Designations
Signal/Voltage
Source
Common
Transmitted Data (Return)
14
1
Sheild
Common
DCE
Transmit Clock
15
2
Transmitted Data
DTE
Common
Received Data (Return)
16
3
Rreceived Data
DCE
DCE
Receiver Clock
17
4
Request To Send
DTE
DTE
Local Loopback
18
5
Clear To Send
DCE
Common
Request To Send (Return)
19
6
DCE Ready
DCE
DTE
Data Terminal Ready
20
7
Signal Ground
Common
DTE
Remote Loopback
21
8
Carrier Detect
DCE
Common
Data Set Ready (Return)
22
9
Receiver Clock (Return)
Common
Common
Data Terminal Ready (Return)
23
10
Carrier Detect (Return)
Common
DTE
DTE Transmitter Clock
24
11
DTE Transmitter Clock (Return)
Common
DCE
Test Mode
25
12
Transmitter Clock (Return)
Common
13
Clear to Send (Return)
Common