Chapter 3: Terminal Menu Operation and Structure

Dial Out/Initial Channels

Write security: 3; Read security: 5

This is the number of B-channels to dial-up on the initial connection. Possible choices are 1 (def) and 2.

Connection List/Bandwidth

The bandwidth parameters that govern this connection are set here.

Bandwidth/On Demand

The parameters under this menu control the data rates required to change bandwidth.

Bandwidth/Mode Write security: 3; Read security: 5

When this option is set to On, the Express XL/XLT will apply its bandwidth- on-demand features for this Connection List profile. If set to Off, none are per- formed.

Bandwidth/Idle Timeout Write security: 3; Read security: 5

This is the number of seconds the ISDN line must be idle before hanging up this connection. A value of 0 (def) means the Express XL/XLT will never drop the link based on the idle timer. The range is 0 to 255.

Bandwidth/Preempt Time Write security: 3; Read security: 5

Occasionally an application will require to connect to a different location be- fore the current connection’s idle timer has timed out. This causes the appli- cation to have to wait for idle timer before it can use the B-channel. This preempt time allows the Connection List that is active to be dropped sooner than the normal idle time. The value ranges from 0 to 255 and is in seconds. When bandwidth is needed for another application, the idle timer is compared to this preempt time. If the idle timer is greater, the connection is preempted. If set to 255 (def), the connection is never preempted. If set to 0, the connection is disconnected immediately when another application is requested.

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Express XL/XLT User Manual

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ADTRAN 1200070L2, 1200070L1 user manual Dial Out/Initial Channels, Connection List/Bandwidth, Bandwidth/On Demand