Zhone 2000 ユーザーガイド

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Figure 4.21
Transmit Channel Configuration Menu
 This menu lets you enable or disable all channels, enable or disable 
individual channels, or select a range of channels to enable/disable.
Configure Clock
Source
To Configure the Clock Source, follow the steps below.
1
Type “7” on the E1 Configuration menu to select Configure Clock Source, 
which will display the Select Tx Clock Source menu (Figure 4.22) with 
status message.
Figure 4.22
Select Tx Clock Source Menu 
2
Type “1” to select External or Slave mode, or type “2” to select Internal 
or Master mode. The IAD saves the configuration and resets the interface.
3
Press Escape to return to the E1 Configuration menu and continue with 
other configuration tasks.
4
After you reset the IAD, you will see a prompt to type “1” to select 
External or “2” to select Internal mode. Enter your selection.
Display Physical Layer
Stats and Alarm Log
The physical layer statistics displays the T1/E1 error rate in errors per second 
for the past second. An event log (up to 5 kB) is maintained for certain 
events. The time stamp is relative to the last system reset. As new events are 
added, older events are discarded when the file size is maximized.
Events include the start and end of Telnet sessions, SNMP access with an 
invalid community name, system reset and system reset from menu command, 
and the WAN link going up or down.