Interface Pinouts
81
Console Pinouts
The connector shown here and pinouts described here correspond to the connector labeled
“Console” on the back of the unit.
DB25 Female DCE
13
1
25
14
Contact
Number
CCITT
Circuit
Number
IEEE
Circuit
Desig.
Circuit
Name
Direction
To From
DCE DCE
1
101
AA
Protective Ground
NA
2
103
BA
Transmitted Data
X
3
104
BB
Received Data
X
5
106
CB
Clear to Send
X
6
107
CC
Data Set Ready
X
7
102
AB
Signal Ground
NA
8
109
CF
Received Line Signal Detector (CD)
X
20
108.2
CD
Data Terminal Ready
X
22
125
CE
Ring Indicator
X
Figure D-3 Console Pinouts
The connecting cable must be a shielded cable.
When connecting the router console directly to a modem, a null modem cable must be used
because both the router console and the modem are DCE devices. A null modem cable
with pinouts according to the following figure must be used.
router Contact Number
Modem Contact Number
8
20
3
2
2
3
20
8
7
7
4
5
5
4
22
22
Figure D-4 Console Null Modem Cable Pinouts
Summary of Contents for LR5100A-T
Page 8: ...Contents...
Page 20: ...Applications 12...
Page 74: ......
Page 78: ...Octet Locations 70 Octet Locations on a Bridged XNS Frame...
Page 86: ...Servicing Information 78...
