194 Using
remotely
Controlling
access to your
system
It is important that you maintain the security of your
system by limiting
I
to authorized users and limiting those
users to just those featu es they need. Remember that a remote
user can make long dist
calls that will be charged to your
company and can make page announcements in your office.
Direct Inward System Access
You can control access to your
system with Direct Inward
System Access (DISA). If you set up the trunk used for remote
access for auto-answer
callers will hear a stuttered
dial tone and must enter a
of Service password before they
are allowed into the system. Access to your
system from
the public telephone network should ‘always be controlled with
If you are setting up access to your system from another
system over a private network, you may not need DISA. If you
set up your E&M trunk to answer without DISA, callers from
remote
systems will receive system dial tone
i m m e d i a t e l y .
Your
facility has a number (the
DN) which an external
caller can dial when they hear system dial tone to activate
and enter a Class of Service password to change to a different
Class of Service.
Class of Service
You can control which feature a remote user can access through
the Class of Service for the call. The Class of Service of a
Remote Access call is determined either by the Class of Service
password entered
system answers with
or by the
Class of Service
with the trunk when the system
answers without DISA.
Afler having accessed the system, a remote user can change the
Class of Service for the call by dialing the
DN followed by a
Class of Service password.
Modular
System Coordinator Guide
PO64264702
Using
remotely 95
M a i n t a i n i n g s e c u r i t y
.
.
To maintain the security of your system, the followingpractices
are recommended:
Warn anyone to whom you give the
access number
t o k e e p i t c o n f i d e n t i a l .
.
Change Class of Service passwords often.
.
Warn anyone to whom you give a Class of Service
password to remember it and not to write it down.
.
Remove the Class of Service password of anyone who
leaves your company.
Notes
To use the system remotely, the telephone you are using to call
the system must use tone dialing.
Remote Access is possible only on DID and E&M trunks,
Loop start trunks that are set to auto-answer.
If the Loop start trunk used for Remote
is set to
mode, auto-answer will not function and the caller
will hear
instead of a stuttered or the system dial tone.
If you use one
system to call remotely into another
system, you can use the available features of the remote
system by pressing followed by the feature code. If
you press
you will invoke the features of the local
system, not the remote one.
4
Your Installer sets trunks to be auto-answer, with or without
DISA, in Configuration programming.
are set in
Configuration programming. The System Coordinator sets up
Service and Class of Service passwords in
A d m i n i s t r a t i o n p r o g r a m m i n g .
In certain situations, ypu may experience lower volume levels
when using
or using
remotely.
PO64264702
Modular DR5.1 System Coordinator Guide
