Nortel Networks NN43001-106 Automatic Timed Reminders Automatic Timed Recalls, Basic Rate Interface, Call Forward, Internal, Call Forward and Hunt by Call Type

286 Call Waiting Redirection

Operating parameters

The existing Call Waiting and Call Forward No Answer limitations apply to

the Call Waiting Redirection feature. The Call Forward No Answer feature is

used by the Call Waiting Redirection feature to redirect "no answer" calls

given Call Waiting treatment.

Although the Call Waiting treatment is applied to a busy DN, the CFNA

call redirection treatment given by the Call Waiting Redirection feature

is for a "no answer" presentation. The unanswered Call Waiting call is

treated as a call presented to an idle "no answered" DN. Calls redirected to

messaging services or sets with displays are provided with the "no answer"

call redirection reason.

The existing implementation of Call Forward No Answer is used to select

the TN with the CFNA DN for the "no answer" Call Waiting call. Calls are

redirected according to the call type (internal or external) as deﬁned at the

designated call redirection TN chosen by CFNA.

Feature interactions

Automatic Timed Reminders

When CFNA is active, the Slow Answer Recall timer begins only after the

call reaches its ﬁnal destination. CFNA has precedence over Attendant

Recall for attendant-extended calls. Irrespective of the relative timeout

intervals for each feature, ringing continues as long as allowed by CFNA

for sets with CFNA enabled.

Since the Call Waiting Redirection feature applies CFNA treatment to a

Call Waiting call, the Call Waiting Redirection feature also has precedence

over the Call Waiting recall timer.

The Call Waiting Redirection feature is not applicable to Basic Rate Interface

(BRI) terminals. However, an ISDN BRI terminal may redirect a call using

hunting or CFNA.

Call Forward All Calls

Call Forward All Calls and Internal Call Forward both have precedence over

Call Waiting and the Call Waiting Redirection feature.

If Call Forward and Hunt by Call Type (CFCT) is enabled with Call Forward

No Answer and Call Waiting Redirection, "no answer" internal calls receiving

Call Waiting treatment are routed for CFNA treatment to the Flexible CFNA

Nortel Communication Server 1000

Features and Services Fundamentals — Book 2 of 6 (C)

NN43001-106 02.04 Standard

Release 5.5 9 May 2008