Comtech EF Data SMS-758 - Manual (Page 58)

Operation SMS-758 Modem Protection Switch
3–20 MN/SMS758 Rev. 3
3.2.5.3 Local Mode
In this operating mode, the switch responds to keypad input affecting setup,
configuration, fault inquiries, and backup online status. If the switch is in this mode
when power loss occurs, it will return to this mode when power is restored. However, the
current backup status will be lost. This mode can also be used for configuration
functions.
To enter the LOCAL mode, press [2] + [ENT] while in the MODE menu.
To change the backup status from local mode, proceed as follows:
1. Press [F1] or [F2] to select modulator or demodulator. (If the switch is a modem
switch rather than an independent modulator/demodulator switch, press [ENT] to
continue.)
2. Select the backup modem number (“1” or “2”), and press [ENT].
3. Select the prime modem number from 0 to 8. (“0” takes the backup modulator or
demodulator offline. “1” to “8” selects that prime for backup.) Press [ENT].
The switch performs the selected function and displays the online and fault status. When
the switch is in LOCAL mode, exercise care when changing the online status. The switch
performs the selected function regardless of fault status or modulator and demodulator
compatibility.
3.2.5.4 Remote Mode
In this operating mode, the switch responds to serial remote interface or relay-remote
input. The switch can receive a full range of commands from the serial remote interface
user, and a limited number from the relay-remote interface. If the switch was in this
mode prior to loss of power, it returns to this mode when power is restored. However,
current backup status will be lost.
This mode can be entered only from the serial remote interface or relay-remote interface.
For details of the Remote Interface Specification, refer to Sections 4.2 and 4.3, and
Appendixes A and B.