Nortel BCM 3.7, Manual

Page: 679 / 1004

Configuring the WAN interfaces 679
Programming Operations Guide
Setting WAN Line Parameters
The WAN Line Parameters screen is displayed when configuring a T1 port (North America only).
Business Communications Manager supports T1 and fractional T1. Refer to the
Port box on the
WAN Summary Parameters screen to see which type of port your are configuring.
1 On the navigation tree, click the Resources key and click the WAN Key.
2 Click the WAN1 heading.
The WAN Summary screen appears.
3 Click the WAN Line Parameters tab.
The WAN Line Parameters screen appears.
4 Configure the WAN Line Parameters according to the information in the following table.
Note: The WAN Line Parameters screen is only available on the WAN1 interface.
Table 177 WAN line parameters
Attribute Description
Channel Rate Lets you set the data transmission rate for each of the DS0 channels in the T1 line.
Possible values are 64K or 56K .
The default value is 64K .
Clock Source Lets you set an internal or external T1 clock source.
Possible values are External or Internal .
The default value is External .
Frame Type Lets you set the type of framing the T1 line supports.
Possible values are ESF or SF(D4) .
The default value is ESF .
Use the setting your T1 service provider recommends.
Line Coding Lets you set the type of encoding used in the T1 line. Use the setting your T1 service
provider recommends.
Possible values are B8ZS or AMI .
Line Polarity Lets you set Normal or Inverted line polarity in the T1 line. Select Inverted only if Line
Coding is set to AMI .
Pulse Density Lets you control whether the DSU/CSU maintains the minimum level of 1s on the line for
AMI encoding.
Possible values are Enabled or Disabled .
Default value is Disabled .
Channel List Lets you create a list of T1 channels used when using fractional T1. You can list each
channel number or provide a range of numbers separated by a comma or hyphen. The
channel list can contain a mix of ranges and individual channel numbers. For example, a
valid channel list format is 3,5,6,10-15,18,20-23. To use all the available T1 channels, type
All
.
Your T1 service provider can give you this information.
Default value is All .