Nortel TDM Recorder, Installation Manual

Page: 109 / 128

September 2007 Voice Card Configurations
Installation Guide 109
2 Click Channels to view the number of channels available after the
update.
Note: If you have exceeded the number of licensed channels, you need
to obtain additional licenses.
3 Click Save .
4 Reboot the PC when prompted. Changes take effect after the restart.
NFAS Backup This is a variant of ISDN used with T1 where
a backup channel, not necessarily the D-
channel, is used to service up to 10 x T1 lines. 23
NFAS None A non-facility associated signaling variant of
ISDN used with T1 lines but which does not
use a D-channel or Backup channel. 24
Note: When a protocol of None is selected, NFAS does not apply.
Note: Channels available are doubled if a DP6409 card is used as two
trunks are available with this card.
Protocol Description
Channels
Available