AT&T DEFINITY Remote Port Security Device - Manual (Page 24)

RPSD Power Monitor Adapter
The Power Monitor Adapter (PMA) (Comcode 406453662) provides an installation option that
allows you to control the behavior of the RPSD during power failure conditions.
In the event of a unit failure or a power failure, the RPSD is designed to block incoming and
outgoing calls to the port, protecting the port against unauthorized access. This call blocking
also prevents the PBX or other protected resources from originating an alarm and will block
dial-up access to the port.
When a PMA is installed, a failure condition causes the RPSD to be bypassed until the
failure condition is cleared. Incoming calls to the PBX or other host resource will be
permitted, and RPSD Lock security is bypassed.
A failure condition forces a contact closure within the PMA which can be connected via the
PMA Alarm Leads to an external alarm sensing device (such as PBX external alarm
connections).
The pma can also be used to generate a signal failure through the Alarm Lead connection
without bypassing the RPSD and compromising security. This is referred to as Alarm Only
installation.
For more information on the PMA, refer to the Addendum to DEFINTY Remote Port Security
Device (RPSD) User’s Manual - Power Monitor Adapter.
2-6 Installation