Nortel 1000 Features And Services Fundamentals page 142

142 Call Forward No Answer, Second Level
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Second Level Call Forward No Answer uses the same customer-level timer
as Flexible Call Forward No Answer to determine the number of rings before
forwarding a call.
Telephones with a message waiting allowed (MWA) Class of Service
should have the Message Center DN defined as their FDN. Calls to these
telephones forward to the Message Center and are not eligible for Second
Level Call Forward No Answer.
Call Forward No Answer Second Level for Message Waiting Allowed
Telephones, enables an SFA Class of Service to be defined on telephones
with a Message Waiting Allowed (MWA) Class of Service. Thus, a message
waiting indication can be activated at the originally dialed DN for Second
Level CFNA calls terminating at a message center.
Requirements at the dialed DN for first-level CFNA are as follows:
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Requirements at the originally called telephone DN for Second Level Call
Forward No Answer are as follows:
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The order of precedence for activation of first level Call Forward No Answer
is as follows:
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If the original call is extended by the attendant console, Attendant Recall
occurs.
Flexible Call Forward No Answer or Hunting is allowed at the customer
level for the incoming call type (DID, non-DID, or internal).
The telephone has an FNA Class of Service.
The terminating call has rung for the number of rings specified for CFNA
or DFNA in the Customer Data Block (LD 15).
The forwarding DN (Flexible Call Forward No Answer DN [FDN],
Coordinated Dialing Plan DN [CDP DN], External Flexible DN [EFD],
Hunting [HNT], or External Hunt [EHT]) must be distinct from the ringing
DN and be a valid number within the system.
Flexible Call Forward No Answer or Hunting is allowed at the customer
level for the incoming call type (DID, non-DID, or internal).
The telephone has SFA and FNA Class of Service.
Call Forward No Answer has occurred only once prior to ringing this
telephone.
The forwarding DN (FDN, EFD, Hunt, or EHT) must be distinct from the
ringing DN and must be a valid number within the system.
Call Forward All Calls
Message Waiting
Nortel Communication Server 1000
Features and Services Fundamentals — Book 2 of 6 (C)
NN43001-106 02.04 Standard
Release 5.5 9 May 2008