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3-313160-A2-GB21-50 January 1997
Clearing DS0 Channel Allocation
You can clear (deallocate) all the DS0 channels
currently allocated to either the network interface, the
DTE Drop/Insert (DSX-1) interface, or the synchronous
data ports.
To clear DS0 channel allocation,
1. From the top-level menu screen, select Cnfig.
2. Select the configuration option set to be copied
into the Edit area by using the appropriate
Function key. Use the scroll keys, if necessary.
3. Select Edit.
4. From the Edit screen, press the
key until the
Chan selection appears on the screen.
5. Select Chan.
F1
Edit:
Port NET Chan
F2
F3
6. From the Channel Config screen, select Clear.
F1
Channel Config:
Dsply Clear DTE
F2
F3
7. From the Clear Channel screen, select NET to
clear all DS0 channels assigned to the network
interface. Or, select DTE to clear all DS0 channels
assigned to the DTE Drop/Insert (DSX-1)
interface. Or, select a port to clear all assignments
for that data port.
F1
Clear Channel:
NET DTE Port1
F2
F3
Providing Backup Capability
If the T1 network fails, the DSU/CSU provides the
ability to reconfigure the unit and restore (at least
partially) priority data circuits through an external backup
device.
You can store backup configuration options in the
Customer 2 set of customer-defined configuration options.
The Enterprise MIB variable devConfigAreaCopy allows
the entire contents of one configuration area to be copied
into another configuration area via SNMP.
By cross-connecting two synchronous data ports to
each other, one port can provide a backup path for the
other. As soon as the ports are configured to be mapped to
each other, Data Set Ready (DSR) for the ports is turned
on. The external backup device can be configured to
initiate dialing when it detects the off-to-on transition of
DSR.