Controlling access to your enterprise edge system, Direct inward system access (disa), Class of service (cos) – Nortel Networks M7410 User Manual

Page 105: Direct inward system access (disa) 104, Class of service (cos) 104

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104 Using System features

Enterprise Edge Feature Programming Telephone Guide

P0908510 Issue 02

An example of how remote access works is a sales representative who spends a lot
of time out of the office needs to make long distance calls to the European office.
Your Enterprise Edge system has a leased line to Europe with reduced transatlantic
charges. You provide the sales representative with a Class of Service password that
gives access to the transatlantic line. The sales representative can then telephone
into the Enterprise Edge system from a hotel, enter their Class of Service password,
and use the leased transatlantic line to make calls.

Remote users can access Enterprise Edge lines, line pools, the page feature, and
remote administration (if enabled through Software Keys). The exact facilities
available to you through remote access vary depending on how your installer set up
your system.

Controlling access to your Enterprise Edge system

It is important to maintain the security of your Enterprise Edge system by limiting
access to authorized users and limiting those users to the features they need.

Direct inward system access (DISA)

Control access to your Enterprise Edge system with direct inward system access
(DISA). Access to your Enterprise Edge system from the public telephone network
should always be controlled with DISA. If your installer programs the line used for
remote access to answer a call automatically and wait for a DISA internal number,
callers hear a stuttered dial tone and must enter a Class of Service password before
they are allowed into the system.

Class of Service (COS)

To control the level of telephone service a remote user can access, your installer can
assign a remote filter and remote package to the line used for remote access. The
remote filter restricts the numbers that can be dialed on the line, and the remote
package restricts the use of line pools and the page feature. To change the
restrictions for the line, the user can enter their Class of Service (COS) password
when the system answers with DISA, or can dial the DISA internal number and
enter their Class of Service password.

Tip
If the loop start line used for remote access is not supervised, auto-answer
does not function and the caller hears ringing instead of a stuttered tone or the
system dial tone.

Remote users can make long distance calls.
Remember that a remote user can make long distance calls that are charged to
your company and can make page announcements in your office.

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