NFAS Type

For Quad T1 lines, you can set the non-facility associated signaling (NFAS) parameters by clicking Boards==>Lines and double-clicking a device using a quad T1 line. NFAS Details

From the NFAS Type pull-down list, choose one of the following options:

Disabled

Choose this option to disable NFAS on the interface.

Primary

Choose this option to set the line as the primary D Channel for the specified group.

Secondary

Choose this option to set the line as the backup D Channel for the specified group.

Slave

Choose this option to set the line as a slave interface. If you choose this option, all channels on the line become B Channels.