Avaya BCM 4.0 Networking Guide de configuration Page 461

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Chapter 53 Call Security: Configuring Direct Inward System Access (DISA) 461
BCM 4.0 Networking Configuration Guide
Remote access on a private network
Systems connected to the private network deliver the last dialed digits to the destination BCM
system for interpretation. The destination BCM system matches the digits to a target line or
interprets the digits as a remote feature request. BCM then routes the call to the specified target
line or activates the remote feature.
By default, T1 E&M trunks are set to answer with DISA. For auto-answer T1 E&M trunks
connected to a private network, change the default so that the trunks are not answered with
DISA. If an auto-answer T1 E&M trunk is configured to answer with DISA, the system tries to
interpret any received digits as a CoS password.
The DISA DN and the Auto DN allow auto-answer private network and DID calls, in the same
way that calls on auto-answer loop start and auto-answer T1 E&M trunks can be answered,
with or without DISA. These DNs are described in “Dialing plan: Private network settings” on
page 323.
Answer with DISA cannot be administered to a PRI trunk. Instead, you can program the dialed
digits to match those of a specific target line DN, the DISA DN or the Auto DN on the other
system.
Answer with DISA cannot be administer to voice over IP (VoIP), since they do not connect
systems outside the private network. However, a user calling in remotely on another system on
the network can use the trunk to access the system or a user calling in on a PSTN line can use
the trunk to access the private network. To provide control for this type of access, ensure that
you specify remote access packages for the trunk. This type of call is called a tandem call.
Other programming
“Call security: Remote access packages” on page 469
“Configuring CoS passwords for remote access” on page 473
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