Nortel Networks Circuit Card 311 User Manual
Page 673
Operation
673
The Route Data Block LD 16 is used to configure a RAN route in
Multi-Channel Level Start/Control mode, using the following response:
RTYP = MLSS.
Trunk members are provisioned in the Trunk Data Block LD 14.
Refer to
"Programming RAN trunks" (page 675)
and to Software
Input/Output Reference — Administration (NN43001-611) for instructions on
service change programs.
Continuous operation mode
In the continuous operation mode
(sometimes called the Audichron mode), a message is constantly played,
over and over again. Callers "barge in" on a playing message or receive
a ringback tone until the message plays again. The start line (ST+) is
hardwired as always active. See
Figure 212 "RAN control signals (Control
. At the end of each message, a pulse is issued
on the "C" line that is used by the trunk unit to cut through to the waiting call.
Note: The "B" (busy) signal line indicates availability of an
announcement machine message to the trunk unit when configured for
the continuous operation mode. This signal is made active (ground) by
the announcement machine if the channel contains a recorded message
and is in an online condition. The "B" line is not connected to a trunk
unit when configured for start mode operation.
In the continuous operation mode (sometimes called the Audichron mode),
a message is constantly played, over and over again. Callers "barge in" on
a playing message or are provided with a ringback tone until the message
begins its next playing. The start line (ST+) is hardwired as always active.
See
Figure 213 "RAN control signals (Control GRD = IDLE)" (page 669)
. At
the end of each message, a pulse is issued on the "C" line that is used by
the trunk unit to cut through to the waiting call.
Note: The "B" (busy) signal line shown in
RAN equipment to the NT8D14 Universal Trunk Card (typical)" (page
666)
Figure 213 "RAN control signals (Control
) is used to indicate availability of an
announcement machine message to the trunk unit when configured for
the continuous operation mode. This signal is made active (ground) by
the announcement machine if the channel contains a recorded message
and is in an online condition. The "B" line is not connected to a trunk
unit when configured for start mode operation.
In the continuous operation mode (sometimes called the Audichron mode),
a message is constantly played, over and over again. Callers "barge in"
on a playing message or receive a ringback tone until the message plays
again. The start line (ST+) is hardwired as always active. See
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
Copyright © 2003-2008, Nortel Networks
.