Nortel BCM 3.7, Manual

Page: 633 / 1004

Changing the DS30 Split 633
Programming Operations Guide
Changing the DS30 Split
A DS30 bus is a group of 32 signaling channel and 32 media channels. The DS30 split determines
how these channels are assigned on Business Communications Manager.
You have a choice of a 2/6 or a 3/5 split. If you choose a 2/6 split, two DS30 buses are assigned to
the MSC and six are assigned to the Media Bay Modules. If you choose a 3/5 split, three DS30
buses are assigned to the MSC and five are assigned to the Media Bay Modules.
The split you choose is determined by the number of signaling channels you require for
applications such as voice mail, IVR, IP trunks, IP telephones and dialup ISDN WAN connections.
If you need 58 signaling channels or less for these applications, use a 2/6 DS30 split. If you need
59 signaling channels or more, use a 3/5 DS30 split.
The DS30 split is set up in the Quick Start Wizard when the system is first configured. If your
signaling channel requirements change, for example you want to increase the number of IP
telephones, you can change from a 2/6 setting to a 3/5 setting without losing data. All new records
added after the update will reflect the new default settings. To determine what the channel
requirements are, refer to
“Determining the MSC resources you require” on page 618 .
Warning:
Ensure that the system is idle before you do this procedure. The system needs
to be restarted after the setting has been changed.
Note: Ensure you have a current backup before you do this procedure.
Note:
You must ensure that your system has adequate DSP resources to support an
increase in voice processing traffic. To determine if you have enough DSP resources, refer
to
“Determining the MSC resources you require” on page 618 . If you need to add
MS-PEC IIIs, refer to the Business Communications Manager BCM200/400 Installation
and Maintenance Guide for installation instructions. Refer to the Business
Communications Manager sales catalogue for part numbers and ordering instructions.
Warning: If you choose to change the DS30 split of your system after you have
configured your system, you could risk losing data for both the core system and optional
applications.
Make sure you understand the implications of the changes before you go forward with this
procedure.