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Configuring MCE1 and MCT1 Interfaces
114078 Rev. A 6-3
Setting the Clock Parameters
The clock parameters define the timing sources that apply to interfaces (ports) and
DS0 timeslots that a MCE1 or MCT1 link or net module supports. How you
access the clock parameters depends on whether you are configuring a
New Quad-Port MCT1 (QMCT1) Module
The Edit QMCT1 Clock Parameters window appears automatically the first
time you configure a port. These clock parameters define the timing sources
for the selected interface (port) only.
New Single- or Dual-Port MCE1 or MCT1 Module
The Edit DS1E1 Clock Parameters window appears automatically the first
time you configure an interface. Dual-port MCE1 and MCT1 link and net
modules contain a single clock chip that provides the timing signals for all
ports. Therefore, clock parameters that you set for the first port apply to the
second port on the module.
Configured QMCT1 Module
Once a QMCT1 ports is configured, you customize its clock source as you
would any other port parameter. See “Customizing MCT1 Port Details.
Configured Single- or Dual-Port MCE1 or MCT1 Module
To set clock parameters for single and dual-port MCE1 and MCT1 modules,
click on the CLOCK connector for the MCE1 or MCT1 module at the
Configuration Manager window.
To set the clock parameters from an Edit Clock Parameters window
1. Set the primary clock source to one of the following:
Select Internal to use the clock chip on the link or net module.
Select Port 1 Ext Loop to use the signal coming in from Port 1.
Select Port 2 Ext Loop to use the signal coming in from Port 2 (Dual- or
Quad-Port Modules only).
Select Port 3 Ext Loop to use the signal coming in from Port 3 (QMCT1
modules only).
Select Port 4 Ext Loop to use the signal coming in from Port 4 (QMCT1
modules only).
Select Auxiliary Ext to use an external source via BNC connectors.
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