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Configuring Resources Settings 59

P0910464 Issue 01 Enterprise Edge Networking Operations Guide

WAN Primary Link Line Parameters

The WAN Link Line Parameters settings are:

Setting Definition

Channel Rate Lets users set the data rate for each of the DS0 channels in the T1 line.

Clock Source Lets users set an internal or external T1 clock source.

Frame Type Lets users set the type of framing to be adopted in the T1 line.

You can select either SF(D4) or ESF for frame type. SF(D4) transmits

superframes consisting of 12 individual frames. ESF transmits superframes

consisting of 24 individual D4 frames and provides enhanced signaling and

synchronization.

ESF lets you testing the digital line while it is in use.

Always use the frame type that the equipment at the receiving end expects.

Line Coding Lets users set the type of encoding used in the T1 line.

You can select either B8ZS or AMI for this parameter. B8ZS (Bipolar with 8

Zero Substitution) line coding replaces a block of eight consecutive binary zeros

with an 8-bit B8ZS code containing bipolar violations in the fourth and seventh

bit positions of the substituted code. In the receiving direction, the B8ZS code is

detected and replaced with eight consecutive binary zeros.

AMI line coding is also bipolar: a binary zero is transmitted as zero volts, and a

binary 1 is transmitted as either a positive or negative pulse, opposite in polarity

to the previous pulse.

Always use the line coding method that the equipment at the receiving end

expects.

Line Polarity Lets users set normal or inverted line polarity in the T1 line. The option inverted

is meaningful only if LineCoding is AMI.

Pulse Density Lets users control whether the DSU/CSU maintains the minimum level of 1s on

the line for AMI encoding.

Channel List Lets users create a list of channels used in the T1 line.

You can specify multiple channel numbers in a comma-separated list. Each item

in the list can contain a range of channel numbers, with the limits of the range

separated by a hyphen character. For example, this is a valid value for channel

list: 3,5,6,10-15,18,20-23. If you use all of the channels, specify it by using the

string All.

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Avaya EE Networking Betriebsanweisung Seite 59