E. Connectors, Cables, and Pin Assignments
9128-A2-GB20-80 September 2002 E-17
Modem Connector
The dial modem interface/connector that is integrated into the FrameSaver unit is
an RJ11 6-position, 4-contact unkeyed modular jack. The following table shows pin
assignments and the purpose of each.
ISDN DBM Connector
The backup connection is through the DBM interface/connector, which is an
8-position keyed modular jack. The following tables show pin assignments for the
ISDN PRI and BRI DBMs and the purpose of each.
FrameSaver SLV 9128-II ISDN PRI pin assignments:
FrameSaver SLV 9126 ISDN BRI/U pin assignments:

ISDN Modular Cable

The ISDN cable comes with the FrameSaver unit ordered with the DBM feature.
Function Circuit Direction Pin Number
Ring R To LocalLoop 2
Tip T To LocalLoop 3
Function Circuit Direction Pin Number
PRI Receive Ring DBM1 From LocalLoop 1
PRI Receive Tip DBM2 From LocalLoop 2
PRI Transmit Ring DBM4 To LocalLoop 4
PRI Transmit Tip DBM5 To LocalLoop 5
Function Circuit Direction Pin Number
BRI Transmit/Receive Ring DBM4 To/From
LocalLoop 4
BRI Transmit/Receive Tip DBM5 To/From
LocalLoop 5