Avaya BCM50 Konfigurationsanleitung PDF herunterladen (Seite 46)

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46 Chapter 2 System telephony networking overview

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Understanding Nortel Voice Networking (MCDN) network

features

When you connect your BCM systems through PRI-SL-1/ETSI QSIG/DPNSS or VoIP trunks, and

activate the MCDN protocol, your network provides a number of network call features. You can

use this protocol to network other BCM systems, such as the tandem system shown in “Creating

tandem private networks”, Norstar systems, Meridian 1 systems, Succession systems, DMS-100

systems or CSE systems.

Table 5 lists the MCDN features that are provided by all SL-1/VoIP networks where MCDN is

active. The features affect call redirection and trunking functions.

Network Call Redirection Information

Network Call Redirection Information (NCRI) builds on the following BCM features:

• External Call Forward

• Call Transfer

• Call Forward

NCRI adds the ability to redirect a call across an MCDN network using Call Forward (All Calls,

No Answer, Busy) and Call Transfer features. The call destination also receives the necessary

redirection information. This feature allows the system to automatically redirect calls from within

a BCM system to the mail system, such as Meridian Mail, which resides outside the BCM system

on the Meridian 1.

Figure 6 shows an example of this situation, where user A calls user B on the same BCM. If user B

is busy or not answering, the call automatically gets transferred to a Meridian Mail number

(user C) across an MCDN link between the BCM system and the Meridian 1 system where the

mailboxes are set up.

Table 4 Node C destination code table, internal termination

Route Absorb length Destination code (Private DNs)

3 (Node D) 0 394 (Node D)

3 (Node D) 0 396 (Node F)

5 (Node A) 0 391 (Node A)

5 (Node A) 0 392 (Node B)

5 (Node A) 0 395 (Node E)

Table 5 MCDN network features

Centralized messaging “Network Call Redirection Information” on page 46 (NCRI)

Centralize trunking “ISDN Call Connection Limitation” on page 47 (ICCL)

“Trunk Route Optimization” on page 48 (TRO)

“Trunk Anti-tromboning” on page 49 (TAT)

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