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Variable definitions
This table describes the variables used to configure the T1/E1 interface.
Variable
Interface
Framing
Line Mode
LineBuildOut
Value
The T1/E1 controller.
The Framing Type for the T1/E1 data line.
Options for T1:
Extended Super Frame (ESF)— 24
consecutive 193-bit frames of data.
Super Frame (SF)—12 consecutive
193-bits of data.
Unframed—the non signaling or unframed
framing format is a simplified version of
the T1 super frame.
The default value is ESF.
The Line Mode.
Options:
Channel Service Unit (CSU)—select if
cable length is equal to or more than 655
feet.
Data Service Unit (DSU)—select if cable
length is less than 655 feet.
The default value is CSU.
The level of attentuation (in decibels)
required for the devices on each end of a
T1 line to communicate. Options are:
0 db
-7.5 db
-15 db
-22.5 db
You can configure this field only for T1
CSU mode.
WAN configuration
29
Configuration Guide
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