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2.
3.
For detailed examples, see "Configuration Examples" on page 142.
path ds3
Configuring T3 Line Parameters
Complete the following steps to configure T3 line parameters. Configure these
parameters for both clear channel and multiplexed T3 lines.
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path ds3 clock source
Configure T3 line parameters (for both clear channel T3 lines and multiplexed
T3 lines composed of fractional T1 lines).
(Optional) Configure T1 or fractional T1 line parameters.
Use to create and configure a T3 path over SONET and SDH interfaces.
Example
host1(config-controller)#path 2 ds3 1 channelized
Use the no version to delete a path.
See path ds3.
Configure the clock source. You must coordinate this setting with the other end
of the line to establish which end is the transmit (internal) clock and which is
the receive (line) clock.
(Optional) Assign a text description or an alias to the interface.
(Optional) Configure the framing format.
(Optional) Enable processing of SNMP link status information about an interface.
(Optional) Configure MDL settings.
(Optional) Configure T1 channels.
Use to configure the transmit clock source for the T3 line.
Select a clock as follows:
Specify the keyword line to use a transmit clock recovered from the line's
receive data stream.
Specify the keywords internal module to use the line module's internal
clock.
Specify the keywords internal chassis to use the router's clock.
You can usually accept the default option, line, to use a transmit clock recovered
from the line's receive data stream, except in rare cases such as back-to-back
router tests. When performing back-to-back router tests, configure one end of
the line as internal and the other end as line.
On a cOC3/STM1 I/O module, you can configure some interfaces with internal
clock sources and others with line clock sources. However, all interfaces with
Chapter 4: Configuring Channelized OCx/STMx Interfaces
Configuration Tasks
131
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