Cables and Connectors
Alarm input port pinouts
The Stinger® Compact Remote ATM DSLAM Getting Started Guide
C-3
Alarm input port pinouts
The ALARM port on the module in the COP slot consists of a DB-15 female connector
that can monitor up to 7 external alarm conditions. This connector provides seven
pairs of pins that can be connected to the alarm relays of up to seven external
devices. Operation or nonoperation of the relays or switches associated with these
connections is can be sensed by the TAOS software, based on continuity or lack of
continuity between the pair of pins to which it is connected.
The sensing connections apply 3.3Vdc at less than 10mA through the closed contacts
of the remote relay or switch. The cable associated with this connector must consist
of 24-gauge to 28-gauge conductors.
Stinger CR ATM DSLAM units that are equipped with an IP2000 or control module
for stand-alone operation are also equipped with a cable that attaches the ALARM
port directly to the enclosure door alarm switch. This cable uses the first pair of pins
on the ALARM port to detect the condition of the door alarm switch.
Table C-2 provides the pinouts for the DB-15 alarm input port.
Cabling for the 48-port LPM with splitters
The cabling for the 48-port LPM with splitters extends the POTs and DSL connections
from the LPM through protection blocks in the enclosure to three cable stubs. The
protection blocks protect the Stinger hardware from voltage spikes and transient
conditions on the copper facilities that could damage the Stinger hardware.
The following information details the association between the connections points of
circuits on each LPM, and their location on the protection blocks. It also details the
termination of circuits from the protection blocks on the three cable stubs that exit
the Stinger CR enclosure.
Table C-2.
Alarm input pinouts
Alarm Number
Sensing
Connection
Ground Connection
Alarm 1
1
1.
Dedicated to the enclosure door alarm on stand-alone Stinger CR ATM DSLAM units.
Pin 1
Pin 2
Alarm 2
Pin 3
Pin 4
Alarm 3
Pin 5
Pin 6
Alarm 4
Pin 7
Pin 8
Alarm 5
Pin 10
Pin 11
Alarm 6
Pin 12
Pin 13
Alarm 7
Pin 14
Pin 15