Comtech EF Data VMS v3.12.x Vipersat - Manual (Page 379)

Chapter 7 - Out-of-Band Units 7-23
MN/22156, rev 12 Switching Out-of-Band Modems
acceptable, such as for modem units that utilize Ethernet as the primary data
interface, for example.
This box must be checked if the circuit requires an exact match to the
requested bit rate in order to function correctly, such as with an E1 interface.
9. Enter the reference Power level for transmission.
The VMS uses the reference power setting as a basis for calculating the
correct power level for the carrier when setting up a switch event. This value
must be sufficient to close the link to the weakest receiving site.
10. For modem units that are Vipersat-enabled (not SNMP), the Extra Settings
parameters are available for configuration. Set the FEC and Modulation as
required.
11. If a priority setting is applicable for this circuit, click on the Priority check
box to activate this field (checked) and enter the required level.
Note that a lower number corresponds to a higher priority level. The default
value (0) equates to No priority.
12. Click on the Demodulators Add button to create the list of demodulators for
the sites that will receive the transmitted broadcast.
The Select Object window will open containing the top level components for
the network, such as the satellite(s) and groups or sites.
Note: Take care to ensure that the devices chosen here do not include the
data demodulator for the site (device that receives the Hub TDM outbound).
13. Navigate through the Select Object window to choose the receiving demod-
ulator (figure 7-19) and click OK.
Take care to ensure that the device selected is the correct one. If groups are
displayed, double-click on the group that holds the target site. Double-click
on the target site to display the subnet list, then double-click on the subnet
that holds the target modem. Double-click on the OOB modem to display the
associated devices.
The Demodulators box will now display the selected device, as shown in
figure 7-20.
14. Repeat this selection process until all receiving demodulators have been
chosen.