
Configuring MCE1 and MCT1 Services
117021-A Rev. A 7-5
• Configured Single- or Dual-Port MCE1 or MCT1 link or net module
Click on the CLOCK connector for the MCE1 or MCT1 module at the
Configuration Manager window.
• Newly-installed DMCT1 net module, QMCT1 link module, or QMCT1
with DS0A
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 port only.
• Configured DMCT1 net module, QMCT1 link module, or QMCT1 with
DS0A
Display the MCT1 Port Parameters window (MCT1 Connector > Edit
Logical Lines > Port Details > MCT1 Port Parameters). See
“Customizing MCT1 Port Parameters.” You customize the clock source as
you would any other QMCT1 or DMCT1 port parameter.
2. Select a primary clock source option.
T
able 7-1 lists the options supported by specific link and net modules.
Table 7-1. MCE1 and MCT1 Clock Source Options
Clock Source
Option
Applicable
Link Modules
Applicable ASN
Net Modules Result
Internal All All Use the clock chip on the link or net module.
Port1 Ext Loop DMCT1, QMCT1,
QMCT1 w/ DS0a
DMCT1 Use the signal coming in from Port 1.
Port2 Ext Loop DMCT1, QMCT1,
QMCT1 w/ DS0A
DMCT1 Use the signal coming in from Port 2.
Port3 Ext Loop QMCT1,
QMCT1 w/ DS0A
N/A Use the signal coming in from Port 3.
Port4 Ext Loop QMCT1 N/A Use the signal coming in from Port 4.
Auxiliary Ext MCE1, DMCE1 MCE1 Use an external clock source via BNC
connectors.
MCT1, DMCT1 N/A Use an external clock source via DB9
connector.
QMCT1,
QMCT1 w/ DS0A
N/A Use an external clock source via Port1. This
option requires a special Y-cable, Bay
Networks Order No. AA0018006.
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