Communication port pin assignments, De-9 to db-25 adapter pin assignments, Dual trunk e1 router c – Black Box LRU4240 User Manual
Page 114: Ommunication, Ssignments
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Dual Trunk E1 Router User’s Guide
Dual Trunk E1 Router
C
OMMUNICATION
P
ORT
P
IN
A
SSIGNMENTS
Table B-7 describes the COMM Port (RJ45) pin assignments.
DE-9 to DB-25 Adapter Pin Assignments
BlackBox can provide a DE-9 to DB-25 adapter for the BlackBox DE-9 COMM Port ribbon cable.
The pinout assignments for the adapter are listed in Table B-8 below.
Table B-2 Communication Port Pin Assignments
RJ45 Pins
Signal
Description
3
SD
Send Data (from Dual Trunk E1 Router to terminal)
6
RD
Receive Data (from terminal to Dual Trunk E1 Router)
8
1
1. CTS is used by the Dual Trunk E1 Router as a collision avoidance line. This line should not be
connected at the CRT terminal end of the COMM Port cable.
CTS
Clear To Send (I/O to all Dual Trunk E1 Routers only)
4, 5
SG
Signal Ground (bi-directional)
7
DCD
Carrier Detect
Table B-3 DE-9 to DB-25 Adapter Pinouts
DE-9
DB-25
3
2
2
3
7
4
8
5
6
6
5
7
1
8
9
23
4
21