20 Device configuration overview
Nortel Business Communication Manager 450 1.0
Configuration — Devices
NN40160-500 01.04 Standard
October 2009
Copyright © 2009 Nortel Networks
Dynamic Device Configuration
With DDC you can dynamically provision hardware resources including
directory numbers (DN) and line numbers to physical hardware (MBMs,
internal IP devices). DDC minimizes the use of DN values and Line Numbers
on a system so the resources are available for other services.
The BCM450 locates and assigns DNs and line numbers dynamically, as
required, until either all hardware administered to a system is populated with
the necessary DNs and line numbers or the system reaches maximum
capacity. When you install a telephony device or hardware component
BCM450, it must be configured to assign the necessary DNs/Lines and
associated resources to make that device operational. Assigning Dns on an
as-needed basis provides much more flexibility for configuring access/line-
pool/routing codes.
Attention: When deconfiguring all DNs from the BCM, then configuring
DNs, the first DN added to the BCM will become the prime and control set.
That is the sequence of configuring DNs needs to be considered, when
configuring the first DN on the BCM. For example, if you deconfigure all DNs,
then configure the application DNs (e.g. DN 400-450), followed by the actual
set DNs (e.g. DN 200-299), then the prime and control set (for example for
PRI & VoIP lines) will be 400 which is an application DN and not a physical
DN. Consequently it is recommended to configure the actual set DNs first,
prior to application DNs.
With DDC, the Location of a device is independent of the Bus value
associated with a device. In Element Manager devices are not indexed by Bus.
They are listed and indexed by a Location.For example, an MBM in Location
“Main MBM 1” may get assigned Bus 10 in one configuration, but subsequent
changes to the configuration may result in “Main MBM 1” being assigned Bus
11 (or any other valid Bus value). The Bus assigned to a device is now one of
several resources that a device receives during configuration to become
operational.
Features and applications
BCM supports the complete range of IP telephony features offered by existing
BCM products as well as many applications provided on the existing BCM
platforms.
Applications overview
BCM supports the following applications
• Voice Messaging for standard voice mail and auto-attendant features
• Unified Messaging providing integrated voice mail management between
voice mail and common e-mail applications