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2Modem/DSU Commands
2-536800-A2-GB31-20 January 1997
Change External Leads States (chels)
Use the chels command to change the state of the two external control interface leads which are
presented as output at the connectors on a COMSPHERE 3400/4400 Series modem,
COMSPHERE 3600 Series DSU/DBM, or a COMSPHERE 3800 Series modem. The external lead
states can be changed to on or off to control external modules. Refer to the individual device
documentation for detailed information on the external leads.
For most commands, NMS enables you to specify the destination for the command’s results and
schedule its execution. If the last page of the input form cannot accommodate the Destination for
results and Schedule execution fields, an additional page is provided. For a complete description
of these fields, refer to Chapter 1, Introduction.
Access Level: Data Technician, Manager, System Administrator
Abbreviation: chels
Restrictions: None
Routine: Yes
Schedule: Yes
Related Commands: Display External Leads States (dsels)
Change External Leads States Input Form
The Change External Leads States input form contains the following fields:
Device(s) (Required field)
Enter the device(s) whose external lead states are to be changed. One or more devices
may be specified. Standard addressing format applies to the input. For information on
device addressing, refer to Appendix D of the COMSPHERE 6800 Series Network
Management System User’s/System Administrator’s Guide.
Pin A output (Required field)
Enter the state of Pin A. Valid options are on or off (default).
Pin B output (Required field)
Enter the state of Pin B. Valid options are on or off (default).
Set CCN event (Required field)
This field is applicable only for 3600 Series DSUs and DBMs. If configuration change
notification has been enabled for this device, use this field to determine whether or not
this configuration change will be reported to the NMS.
Enter yes to report this change to the NMS.
Enter no (default) to prevent this change from being reported to the NMS.
If configuration change notification has been disabled for this modem, configuration
changes are not reported to the NMS regardless of what is entered in this field.