
Configuring WAN Line Services
7-6
117345-B Rev. 00
Table 7-1 lists the options supported by specific link and net modules.
For MCE1 networks, see the Primary Clock parameter on page A-24
for
information. For MCT1 networks, see page A-28. For QMCT1 and QMCT1 w/
DS0A link modules and the DMCT1 net module, see page A-35
.
The router uses the secondary clock only when the primary clock is unavailable.
For MCE1 networks, see the Secondary Clock parameter on page A-25
for
information. For MCT1 networks, see page A-29. For QMCT1 and QMCT1 w/
DS0A link modules and the DMCT1 net module, see page A-35
.
Customizing MCE1 Port Parameters
You set values for configurable MCE1 line services using the MCE1 Port
Parameters window (Figure 7-2). The MCE1 port parameters apply to each of the
DS0 channels (timeslots) provided by an MCE1 port (connector).
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 DB-9
connectors.
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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