Nortel Networks 1000 User Manual
Page 589
Operation
589
Refer to
“Programming RAN trunks” (page 591)
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 196 "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 197 "RAN control signals (Control GRD = IDLE)" (page 585)
.
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
582)
(not represented in
Figure 197 "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
02.06
Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.