
Chapter 1 Introduction 23
IP Telephony Configuration Guide
Networking with Business Communications Manager 3.5
The Business Communications Manager 3.5 is a key building block in creating your
communications network. It interoperates with many devices, including the Meridian 1 system and
H.323 devices. The Business Communications Manager 3.5 system can be connected to devices
through multiple IP networks, as well as through the PSTN. Multiple Business Communications
Manager 3.5 systems also can be linked together on a network of VoIP trunks and/or dedicated
physical lines. Refer to Chapter 8, “Typical network applications using MCDN,” on page 139.
The Business Communications Manager can be connected to a LAN through a LAN card, to a
WAN through a WAN card, and to a PSTN through trunk media bay modules, as shown for
Business Communications Manager A in the above diagram. Through these networks, the system
accesses other systems and network equipment connected to the network.
M1-IPT
The Meridian 1 Internet Telephony Path (M1-IPT) allows Meridian 1 systems to communicate
with the Business Communications Manager 3.5 via H.323 trunks. Telephones on the M1, such as
Meridian telephone A, can initiate and receive calls with the other telephones on the system across
IP networks.
To provide fallback at times when IP traffic cannot pass, you can also connect the Meridian to the
Business Communications Managers through ISDN PRI SL-1 lines, which provide the same
MCDN capability that you can achieve through the H.323 VoIP trunks with MCDN active.
Refer to the Programming Operations Guide for a description of MCDN features and networking
with PRI SL-1 lines. “Typical network applications using MCDN” on page 139 describes how to
provide the same network over VoIP lines.
A Business Communications Manager connected to an M1-IPT using the MCDN protocol can
provide access to a central voice mail and call attendant systems, which can streamline
multi-office telephony administration.
Telephones
The Business Communications Manager 3.5 system can communicate using digital telephones
(M7000, T7000, T7100, M7100, M7100N, T7208, M7208, M7208N, T7316, T7316E,
T7316E+KIMs, M7310, M7310N, M7324, and M7324N), cordless telephones (Companion,
DECT, T7406), IP telephones and applications (i2002, i2004, Nortel Networks i2050 Software
Phone), and IP/wireless telephones (NetVision and NetVision Data telephones). With this much
flexibility, the Business Communications Manager can provide the type of service you require to
be most productive in your business.
While analog and digital telephones cannot be connected to the Business Communications
Manager 3.5 system with an IP connection, they can make and receive calls to and from other
systems through VoIP trunks. Calls received through the VoIP trunks to system telephones are
received through the LAN or WAN card and are translated within the Business Communications
Manager to voice channels.
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