544 Collect Call Blocking
Classes of Service and prompts have been introduced to inhibit specific
users from receiving collect DID and Central Office calls. These can be
configured for the following:
•analog (500/2500 type) telephones and Meridian 1 proprietary
telephones through the Collect Call Blocking Allowed/Denied
(CCBA/CCBD) Class of Service.
•Attendant and Network Alternate Route Selection calls on a per
customer basis through CCBA/CCBD option.
•Automatic Call Distribution (ACD) queues through the CCBA prompt.
•Direct Inward System Access (DISA) through the CCBA prompt.
•Tandem calls dialed with Coordinated Dialing Plan (CDP) (Trunk
Steering Code, Distant Steering Code) through the CCBA prompt.
•Tandem non-CDP calls through the CCBA prompt in the Route Data
Block from the outgoing trunk route.
The system sends the CCB answer signal in place of the regular signal
for incoming DID/CO calls from routes with CCB enabled, when a call is
answered by a CCB user. If the call is a collect call, the CO will disconnect
the call.
Figure 22
Collect Call Blocking answer signal compared to regular answer signal
Nortel Communication Server 1000
Features and Services Fundamentals — Book 2 of 6 (C)
NN43001-106 02.04 Standard
Release 5.5 9 May 2008
Copyright © 1994–2008, Nortel Networks
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