Nortel Networks 311

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.

Trunkmembers 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) forinstr uctions 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 star t line (ST+) is

hardwired as always active. See Figure 212 "RAN control signals (Control

GRD = IDLE)" (page 668). 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 overagain. 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 Figure 211 "Connecting

RAN equipment to the NT8D14 Universal Trunk Card (typical)" (page

666) (not represented in Figure 213 "RAN control signals (Control

GRD = IDLE)" (page 669)) 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 overagain. Callers "barge in"

on a playing message or receive a ringback tone untilthe message plays

again. The start line (ST+) is hardwired as always active. See Figure 214

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311 01.04 Standard

Release 5.0 23 May 2008