Instruction manual

Remote port security device
Issue 9 May 2003
16-3
■ A power monitor circuit allows you to fail or bypass calls to the lock during a
power failure.
■ An alarm contact closure interface is provided to generate an alarm when
the lock loses power.
Lock and keys work with all data communications protocols.
Securing DEFINITY Systems (prior to Release 7.2)
with the remote port security device
If your telephones are connected to a DEFINITY switch or DEFINITY ECS prior to
Release 7.2 (which is the same as DEFINITY G3V7.2), you may wish to use a
remote port security device. (Note that this lock and key system is available only
in the United States.) The RPSD hardware offers enhanced protection for dial-up
data access so that hackers and other unauthorized users cannot gain access to
your systems.
NOTE:
Specifically, the RPSD can be used with Communication Manager,
MultiVantage™ Software, DEFINITY ECS, DEFINITY communications
systems, System 75 (V2 or higher), System 85 and DIMENSION PBX
Systems; the AUDIX, DEFINITY AUDIX, and AUDIX Voice Power Systems;
and all System Management products
!
DANGER:
IMPORTANT NOTE: Since the RPSD contains a Data Encryption
Standard (DES) algorithm, its use outside the United States and
Canada is prohibited by law.
On the RSPD, the lock and key authentication process is as follows:
■ The lock answers the incoming call destined for the dial-up modem port. It
generates a dynamic challenge, unique to every call, and transmits it to the
RPSD installed at the calling end. The lock and key must be initialized with
the same secret encryption key value. This secret encryption key has
approximately 70 quadrillion combinations.
■ When the RPSD key receives the challenge, it generates a response using
the secret encryption key. It then transmits the expected response back to
the RPSD lock. If the RPSD lock successfully authenticates the response,
it provides ringing to the terminating modem and the call completes. The
RPSD terminates a call immediately if any step in the challenge/response
authentication process is not completed successfully.
For more information about the RPSD hardware, see the DEFINITY®
Communications System Remote Port Security Device User’s Manual,
555-025-400.