Nortel Meridian Meridian 1 Implementation Manual page 129

The MICB card selects the port for dialing out. The port is available if
the number of ports reserved for the conference is greater than the
number of conferees that have joined the conference. When all
reserved ports are taken, the port can be available, if there are
un-reserved ports on the MICB card and the port expansion feature is
enabled for that conference. If all reserved ports are taken and there are
no unscheduled ports available, the system cannot complete the call.
Note: When the chairperson dials out to another MICB conference,
two ports are seized, the dial-out port of the local MICB and the
dial-in port of the remote MICB. This connection can be terminated
only if the chairperson drops the dial-out port of the local MICB.
However, normally the dial-out call is a telephone, so the system only
seizes one port.
Dial-out Authorization
The Dial-out Authorization feature enables the chairperson to connect
external parties to the conference when the desired destination number
is restricted.
This feature uses the Meridian Authorization feature. As such, the
chairperson must be aware of outdialing restrictions and know the
authorization access code (Flexible Feature Code – FFC or Special
Prefix – SPRE on the Succession 1000M, Succession 1000, and
Meridian 1; Auth Access # on the Meridian SL-100).
The chairperson must enter the whole string of authorization numbers
as the example in
confirmation tones or dial tone in the middle of dialing.
Meridian Integrated Conference Bridge
Figure 65 on page 130
Page 129 of 208
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Service Implementation Guide