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Cisco IOS in a Nutshell, 2nd Edition by James Boney

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Name

controller — global

Synopsis

controller {t1 | e1} slot/port
controller {t1 | e1} number

Configures

T1 or E1 controllers

Default

None

Description

This command places you in the controller mode, allowing you to configure a controller for a T1 or E1 line. slot/port and number identify the controller that you are configuring.

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