Understanding Nortel Voice Networking (Mcdn) Network Features; Network Call Redirection Information - Nortel BCM50 Configuration Manual

46 Chapter 2 System telephony networking overview
Table 4 Node C destination code table, internal termination
Route
3 (Node D)
3 (Node D)
5 (Node A)
5 (Node A)
5 (Node A)
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
tandem private
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.
Table 5 MCDN network features
Centralized messaging
Centralize trunking

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.
NN40020-603 NN40020-603
Absorb length Destination code (Private DNs)
0 394 (Node D)
0 396 (Node F)
0 391 (Node A)
0 392 (Node B)
0 395 (Node E)
networks", Norstar systems, Meridian 1 systems, Succession systems, DMS-100
"Network Call Redirection Information" on page 46
"ISDN Call Connection Limitation" on page 47
"Trunk Route Optimization" on page 48
"Trunk Anti-tromboning" on page 49
"Creating
(NCRI)
(ICCL)
(TRO)
(TAT)