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7-4 User’s Reference Guide
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The T1 Line Configuration screen appears.
1. Select Line Encoding and press Return. From the pop-up menu, highlight the encoding your telephone ser-
vice provider uses: B8Zs or AMI. The default setting is B8Zs. Press Return.
2. Select Framing Mode and press Return. From the pop-up menu, highlight either ESF or D4, depending on
the framing mode that your telephone service provider advises you to use. The default setting is ESF. Press
Return.
3. Select Number of DS0 Channels and enter the number of DS0 channels that you and your telephone
service provider have determined are necessary for your T1 line. The default setting for DS0 Channels is 1
(one). Press Return.
Note: Each DS0 channel represents a 56k or 64k increment in bandwidth. Selecting a number less than
the maximum specifies a fractional-T1 interface. You can have a maximum of 24 DS0 channels.
4. Select First DS0 Channel and enter the number of the first active DS0 channel you will be using. The
default setting is 1 (one). Press Return.
Note: You can change the First DS0 Channel number, which has a valid range from one to the maximum
number minus the number of active channels. If the number of active DS0 channels is 24 (maximum), First
DS0 Channel is hidden.
If you specify a number of DS0 channels less than the maximum, a Contiguous Channels item appears. For
fractional-T1, you can specify whether the DS0 channels are contiguous or alternating by toggling
Contiguous Channels to Yes or No.
5. Select Channel Data Rate and highlight the data rate that your service provider has designated your
channel to connect at. The channel data rate choices are Nx56k or Nx64k. The default is Nx64k. Press
Return.
T1 Line Configuration
Line Encoding... B8ZS
Framing Mode... ESF
Number of DS0 Channels: 1
First DS0 Channel: 1
Channel Data Rate... Nx64k
Data Link Encapsulation... Frame Relay
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Enter Information supplied to you by your telephone company.