Nortel 1000 Features And Services Fundamentals page 545

Operating parameters
The Collect Call Blocking feature supports both analog and DTI2 trunks,
and the following Intelligent Peripheral Equipment (IPE) cards:
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•
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The Collect Call Blocking answer signal can only be sent in cases where
answer supervision is provided by the system.
Once the modified answer signal is sent to the CO, the system has no
control over how the call is handled by the CO.
If a CCB user answers a call from a CO/DID route with Collect Call Blocking
activated, the CCB answer signal is sent to the CO for all incoming DID and
CO calls. For analog trunks, the user will experience clicking on the line
and a temporary break is speechpath (0.5 to 2.5 seconds) while the CCB
answer signal is being sent.
If the XFCOT and EXUT cards do not have flexible firmware timing, the
CCB flash portion of the CCB answer signal is ignored by firmware, and the
regular answer signal is returned to the CO. However, software controlled
signaling can be done with EXUT cards.
In a standalone environment, all input from a set (except from the Release
key) is ignored while the Collect Call Blocking answer signal is being sent.
Collect Call Blocking is applied to attendants on a customer basis only; it
cannot be applied on a tenant basis.
The answer signal returned for a call from a route with CCB enabled and that
is Network Attendant Service (NAS) routed is determined by the customer
option on the source node. Thus, NAS routing can be configured across
any Meridian Customer Defined Network environment, but the source node
determines the answer supervision sent to the CO.
Call Detail Recording (CDR) record timing begins on the first answer of the
CCB answer sequence. For this reason, CDR records is generated for
incoming calls to CCB users across routes on which CCB is enabled. If
the call is collect, and is dropped, a CDR record of approximately CCB1 +
CCB2 length is generated.
Copyright © 1994–2008, Nortel Networks
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the NTCK16BB Extended Flexible COT Trunk Card (XFCOT) with
firmware flash timing
the NT8D14BA Enhanced Extended Universal Trunk Card (EXUT)
containing the Centrex Switchhook Flash function in the firmware, and
the NT8K14AK Extended Universal Trunk Card (XUT) which may be
used if the Centrex Switchhook Flash is configured with software timing.
Nortel Communication Server 1000
Features and Services Fundamentals — Book 2 of 6 (C)
NN43001-106 02.04 Standard
Release 5.5 9 May 2008
Operating parameters 545