Nortel 1000 Features And Services Fundamentals page 159

Multi-Party Operations
For Call Transfer with Ring No Answer (RGNA) if the user has selected an
option other than Standard, the optional treatment has priority over the
CFNA option selected in the LD 15. If the user has chosen the standard
option for RGNA, the call is treated as a normal CFNA call, and handled
according to the options selected for CFNA in LD 15. Once the call is routed
to a Night DN during recovery of a failed operation and the Night DN does
not answer, the call is treated according to the NFNA and FDN options
chosen for the Night DN. The Night DN can use flexible CFNA DN in two
levels. MPO misoperation does not change the operation of the DNFD timer
if one has been configured in LD 15.
Multiple Appearance Directory Number Redirection Prime
The MARP TN always controls the call redirection for Call Forward No
Answer.
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Network Intercom
Hot Type I calls respect or override all kinds of Call Forward features (Busy,
No Answer, All Calls, Internal, etc.) according to per-set definitions. If Call
Forward is respected, the call becomes a normally dialed call and the
originator will receive the appropriate indication on their display.
Network-Wide Listed Directory Number
A Listed Directory Number (LDN) ICI has a higher priority than a Call
Forward No Answer ICI. When a call is forwarded to an LDN through
Flexible DN, the call is presented on an LDN ICI.
Copyright © 1994–2008, Nortel Networks
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If a DN is assigned as a Prime DN on a telephone and as a secondary
DN on one or more telephones, the DN list is still organized as described
in the preceding paragraphs. If only one prime appearance of a DN
exists, however, call redirection parameters are derived from the TN of
the prime appearance telephone, even though it may not be at the end
of the list. A prime appearance is always the first TN used when the
system looks for call redirection instructions.
If a DN appears on analog (500/2500 type) telephones, and Meridian
1 proprietary telephones, the analog (500/2500 type) telephones are
listed in numerical TN order at the top of the list. Meridian 1 proprietary
telephones are listed in numerical TN order at the bottom of the list. A
service change to an analog (500/2500 type) telephone moves its TN to
the beginning of the list. A service change to a Meridian 1 proprietary
telephone moves its TN to the end of the list.
A SYSLOAD restructures the list back to numerical TN order with
analog (500/2500 type) telephones at the top and Meridian 1 proprietary
telephones at the bottom. Call redirection parameters continue to be
derived as described in the preceding paragraphs.
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 159