Nortel 1000 Features And Services Fundamentals page 153

Incoming calls on private lines with the Restricted Call Modification option
enabled are not forwarded.
Flexible Call Forward No Answer DN (FDN) can be assigned to telephones
with Message Waiting Allowed Class of Service. This is irrespective of the
telephone's Class of Service and how forward no answer is specified in the
Customer Data Block. Message Center always uses the FDN associated
with the telephone to route unanswered calls.
Feature interactions
Advice of Charge for EuroISDN
Calls charged with Advice of Charge that are either transferred, extended
or redirected to another telephone using Call Forward No Answer are
charged against the last telephone that answers the call and the controlling
telephone releases.
Attendant Administration
Attendant Administration can assign and change a Flexible Call Forward No
Answer DN with the function key on the attendant console.
Attendant Alternative Answering
When Attendant Alternative Answering (AAA) DN does not answer, the
call can be forwarded by CFNA to the DN defined as the CFNA DN for the
originally dialed DN. If the originally dialed DN is the attendant, the call is
forwarded to the CFNA DN defined for the AAA DN.
Attendant Blocking of Directory Number
The Attendant Blocking of DN feature will override the Call Forward No
Answer feature. If the blocked DN of the telephone has the Call Forward No
Answer feature active when the SACP key is pressed to ring the DN, the
DN will ring until answered or disconnected. No Call Forward No Answer is
done for the Attendant Blocking of DN call.
Attendant Break-In to Inquiry Calls
The operation of Call Forward No Answer is overridden on a analog
(500/2500 type) telephone that has inadvertently been placed on-hook
during a Break-In conference to allow it to be re-rung by the attendant.
If the controlling party goes on hook in a Break-In conference, and is being
re-rung by the attendant, the ringing takes precedence over Call Forward
No Answer that may be applied to the telephone.
Attendant Overflow Position
A call rerouted through Attendant Overflow Position will Call Forward to
the forwarding DN only if it is the Prime DN or a single appearance DN on
that telephone.
Copyright © 1994–2008, Nortel Networks
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Nortel Communication Server 1000
Features and Services Fundamentals — Book 2 of 6 (C)
NN43001-106 02.04 Standard
Release 5.5 9 May 2008
Feature interactions 153