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DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506
Issue 1
April 2000
Features and technical reference
1403ISDN service
20
Call Identification Display
Two types of identification numbers are provided with ISDN and may be used in
the various types of displays used with ISDN. The two types of identification
numbers are as follows:
■ Calling Party Number (CPN): A 0–15 digit DDD number associated with a
specific station. When a system user makes a call that uses ISDN, that
user’s CPN is provided by the system for ISDN. ISDN public-unknown
numbering or ISDN private numbering forms are administered to create a
0–15 digit CPN from a local station number.
■ Billing Number (BN): The calling party’s billing number, which is
provided to an inter-exchange network via Equal Access or Centralized
Automatic Message Accounting (CAMA). This number is stored at either a
local or network switch. If a customer is connected directly to the AT&T
Switched Network, the BN is the customer’s billing number stored in that
network. If the CPN is not provided on an incoming ISDN call, the network
uses the BN for the station identification number.
The following types of display information are provided with ISDN:
■ Calling Party’s Number
The calling party’s number appears on the called party’s display. This
number is provided only if the outgoing ISDN trunk group is administered
to send the CPN, and if ISDN public-unknown numbering or ISDN private
numbering forms are administered to create a CPN. On calls incoming to a
system, the network may provide either the CPN or BN as the calling
party’s number. Extensions and 12-digit international numbers display
without dashes. Dashes are only used for 7-digit and 10-digit numbers
when North American Area Code is enabled on the Dial Plan screen.
■ Calling Party’s Name
The calling party’s name appears on the called party’s display. On calls
generated from a DEFINITY ECS, the caller’s name is provided if the
ISDN trunk group is administered to send the name to the network. On
calls incoming to a DEFINITY ECS, the (public or private) network may
provide the caller’s name. If the caller’s name is not available, the called
party’s display shows “CALL FROM” instead, followed by the calling
party’s number (if available).
■ Connected Party’s Number
The connected party’s number appears on the caller’s display. On calls
generated from a DEFINITY ECS, callers’ displays may show the digits
dialed as the call is made. If the (public or private) ISDN network provides
the connected party’s number, the calling party’s display is updated to show
the connected party’s number. The format of the connected party’s number
is the same as that of the calling party’s number described previously on