Avaya Nortel Communication Server 1000 Reference page 413

Figure 128: Connecting RAN equipment to the NT8D14 Universal Trunk Card (typical)
RAN modes of operation
Figure 129: RAN control signals (Control GRD = IDLE)
of control signals to message playback for the operating modes available in announcement
machines. The signal names shown in
IDLE) on page 414 are typical.
Note:
For continuous operation mode, connect the trunk unit MB line to the announcer B line only,
and ground the announcer ST+ line. For pulse start or level start modes, connect the trunk
unit MB line to the announcer ST+ line only, and leave the announcer B line unconnected.
Circuit Card Reference
on page 414 shows the relationship
Figure 129: RAN control signals (Control GRD =
Operation
July 2011 413