Avaya BCM 4.0 Networking Guide de configuration Page 457

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457
BCM 4.0 Networking Configuration Guide
Chapter 53
Call Security: Configuring Direct Inward System Access
(DISA)
This following describes the telephony configuration that allows users to call from a remote site
into the system to access system features.
The following paths indicate where to access DISA settings in Element Manager and through
Telset Administration:
Element Manager: Configuration > Resources > Telephony Resources; Configuration >
Telephony > Dialing Plan > Public Network; Configuration > Telephony > Dialing Plan >
Private Network
Telset interface: **CONFIG > Hardware; System > Access codes
Refer to the following:
“Remote access overview” on page 457
“Setting up remote access on lines” on page 459
Remote access overview
To control access from the public or private network, you can configure auto-answer trunks to
answer with DISA. Remote callers hear a stuttered dial tone and must then enter a CoS password
that determines what they are allowed to do in the system.
Auto-answer T1 loop start and T1 E&M trunks are configured to answer with DISA by
default.
T1 DID trunks: You cannot configure T1 DID trunks to answer with DISA. If you want
incoming T1 DID calls to be answered with DISA, configure the system with a DISA DN.
Incoming T1 DID calls that map onto the DISA DN are then routed to a line that has DISA.
You cannot program a DISA DN or Auto DN to VoIP trunks, because they act as auto-answer
lines for private networks. However, you still need to assign remote access packages to the
VoIP trunks, to ensure that remote access restrictions are properly applied to incoming calls
trying to access the system or the system network.
For specific line programming, refer to the sections under “Setting up remote access on lines” on
page 459.
Figure 142 provides an overview of the remote access configuration process.
Task: Configuring DISA DNs, Auto DNs, Answering with DISA
Set up the system parameters for system users to call into the from a remote location. Note that
Remote Access Packages are required for private network trunks, as well.
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