Motorola 68230 - Vanguard 300 DSU/CSU Operator's Manual page 76

ISDN Interface RJ45 Connector
The following table shows the pinouts for the RJ45 ISDN U and S/T interface
connection cable:
U Card
Pin Name
Battery Status
1
Battery Status
2
---
3
Signal
4
Signal
5
---
6
Powering
7
Powering
8
Connector Pin Numbers
The connector pins are numbered from right to left as indicated in the following
diagram:
S Card
Function Name
No connection PS 3 +
No connection PS 3 -
No connection TE NT +
U interface tip NT TE +
or ring
U interface tip NT TE -
or ring
No connection TE NT -
No connection PS 2 -
No connection PS 2 +
Function
No connection
No connection
TE to NT pair,
no power
connection
NT to TE pair,
no power
connection
NT to TE pair,
no power
connection
TE to NT pair,
no power
connection
No connection
No connection