Nortel BCM 3.7, Manual

Page: 142 / 1004

142 Defining trunk module types and settings
N0008589 3.3
Ports on Bus
Both types of modules have a Ports on bus heading. This heading shows the state of the port that
connects the module to the trunk line or system device.
• Trunk modules, each port maps to an incoming line. Trunk port status is either idle or active.
Refer to
“Trunk module ports programming” on page 154 .
• Station modules, each port maps to a connection to a system device (telephones, fax machines,
doorphone). For station modules, port status is either equipped (device connected) or
unequipped (no device connected). You can also determine what type of device is attached to
the port. Refer to
“Viewing station module information” on page 155 .
Bus 01 and 08 note: Bus 01 and 08 ports on bus are really virtual ports, since they connect to
services supported by the MSC. These ports are used for such devices and services as IP
telephones and voice mail traffic.
Defining trunk module types and settings
MSC bus numbers assigned to a trunk module display module numbers under the Bus heading that
correspond to the offset number set on the module DIP switches. For instance any trunk module
that has an offset of 0, will display under the heading Module 1, and so on to a maximum of four
modules (CTM4s/GATM4s).
The Module menu, which appears only under a Bus record that is configured for trunk modules,
allows you to configure line or loop provisioning for the module associated with a particular bus.
This record shows the number of lines or loops assigned to the module. It also provides the first
and last loop or line number. These settings are read-only.
The fields that appear on the module screen vary, depending on the module type you specify.
Trunk lines can also require configuration of settings such as the protocol type/version, frame
structure, clocking, and timers. These parameters depend on how the interface of the service
provider that the module connects to has been configured.
This section refers to these topics:
• “Configuring the trunk module to line type” on page 143
• “Determining Clock Sources for DTMs or BRIs” on page 147
• “T1 interface parameters (region-specific)” on page 148
• “E1 parameters (region-specific)” on page 150
• “PRI Call-by-Call service selection” on page 150
• “Provisioning lines (PRI, T1, DASS2)” on page 152
• “PRI B-channel provisioning” on page 154
• “Trunk module ports programming” on page 154