Norstar DR5, Installer'S Manual

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Data
Remote system access
The remote access feature allows callers elsewhere on a private
network, or on the public network, to get access to a
system by dialing directly without going through an attendant.
Once on the system, the remote user can use some of the
system’s resources.
systems with at least one Trunk Module support remote
system access on the following trunk types which may require
the remote caller to enter a password for Direct Inward System
Access (DISA):
auto-answer loop start trunks
auto-answer E&M trunks
DID trunks (by means of the DN).
The system resources (dialing capabilities, Line Pool access and
feature access) that a remote user may access depends on the
Class of Service assigned to them. You can refer to the
description of Class of Service in the Administration chapter for
more details.
Remote access on
loop
start and E&M trunks
Loop start trunks provide remote access to from the
public network; E&M trunks provide remote access from a private
network. Each must be configured to be auto-answer (in
Trunk
programming) to provide remote system access.
A loop start trunk
must
have disconnect supervision if it is to
operate in auto-answer mode. E&M trunks always operate in
disconnect supervised mode.
Auto-answer with
When a caller dials in, the system answers with stuttered dial
tone. This is the prompt to enter a Class of Service (COS)
password which determines which system capabilities are
available to the caller.
Modular Installer Guide