Avaya BCM 4.0 Networking Przewodnik Konfiguracji Pobierz pdf (Strona 453)

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Chapter 52 Call security and remote access 453

BCM 4.0 Networking Configuration Guide

• DISA cannot be administered to a T1 DID and PRI trunk. You can program the dialed digits to

match those of a specific target line DN, the DISA DN or the Auto DN. If you program the

dialed digits to the DISA DN, only the incoming calls that match the programmed DN will

receive a DISA dial tone. Incoming calls with other digits will route to a target line.

Remote access on DPNSS lines

A remote caller can access a BCM system dial tone, select a line pool that contains exchange lines

or DPNSS lines, then dial a number. The procedure is identical to dialing an outside number from

an extension in the local system. The main features are:

• Calls coming from another switch to the BCM system are routed in two ways, depending on

the Answer mode that you program. If the Answer mode is set to Manual, and the line is

assigned to ring at an extension, the incoming call automatically rings at the assigned

extension. If Answer mode is set to Auto, BCM automatically answers the incoming call.

Because most other DPNSS features are extension-specific, Nortel recommends that all

DPNSS lines are configured as auto-answer lines.

• The Page feature is available to both remote callers and callers within the system. A remote

caller must have DTMF capability to access the Page feature.

• The line redirection feature allows the originating party to redirect a call that is waiting a

connection or re-connection to an alternate destination after a time-out period. Failed calls can

be redirected. Priority calls cannot be redirected.

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 “Understanding access codes” on

page 265.

• 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.

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