Verilink Productivity 500 (34-00236) Product Manual - Manual (Page 44)

Page 44 500 TA Option Configuration
ISDN CHANNEL PROVISIONING
B-Channel Provisioning !C4=, !C5=
The B-channels--B1, B2, or both--can be set to either circuit-switched (dial-
up) or permanent (nailed) line.
A permanent line, also referred to as a nailed line, is always connected to the
B-channel. The rate adaption protocol selected will constantly try to establish
an end-to-end connection on a permanent line. When establishing a permanent
line, the protocol, parity, word length, and stop bits should be the same for both
units. There is no D-channel signaling associated with the B-channel when a
permanent line is established. Once the option has been set and saved, restart
the link with the >Z command. This causes the 500 TA to use the newly
selected option.
PORT OPTIONS
These options determine how the data and voice ports communicate on the
ISDN line used by the 500 TA. The majority of the options apply only to the
data port. Unless explicitly designated, you may assume an option applies only
to the data port.
Rate Adaption Protocol Selection %A2
The %A2= commands select the rate adaption protocol.
Command Operation
!N1= Sets the data directory number
*!N1= Sets the voice directory number
Command Operation
!C4=0 B1-channel set for circuit-switched line (default)
!C5=0 B2-channel set for circuit-switched line (default)
!C4=9 B1-channel set for permanent line
!C5=9 B2-channel set for permanent line
Command Operation
%A2=0 Clear channel with no protocol
%A2=2 V.120 rate adaption protocol (default)