Instruction manual

Central Office Provisioning
Calling Party Number/Billing Number
The Calling Party Number/Billing Number feature allows an MLX display telephone
user to see the caller’s calling party number (CPN) or billing number (BN) on the
display. The CPN is the number specified by the caller to be delivered for self-
identification. The BN is the number provided by the central office and is used for
billing information. The caller can specify if the CPN/BN should be private and if CPNs
should be screened.
Incoming Calls
The CPN/BN feature is provisioned by setting either the /CPCPFA or /CPBPFA attribute
as indicated in Table 2. For incoming calls, the attribute chosen results in the following
information sent by the central office:
■ /CPCPFA-CPN is the preference and is displayed, if available; otherwise, BN is
displayed, if available
■ /CPBPFA-BN is the preference and is displayed, if available; otherwise, CPN is
displayed, if available
The /CPCPFA is the most commonly used attribute because most customers want the
CPN displayed, if available.
Outgoing Calls
For outgoing calls, the MERLIN LEGEND BRI system sends the calling party information
to the central office to allow display at the destination station. The default setting is
that the calling party information is sent on all calls placed on BRI lines.
Privacy features are available from the central office that control delivery of the
CPN/BN:
■ All-Call Privacy (ACP)
■ Per-Call Privacy (PCP)
The All-Call Privacy (ACP) feature capability allows or prevents the delivery of the
calling party number/billing number (CPN/BN) associated with each BRI line to the
destination station. The All-Call Privacy feature should be ordered for each BRI line
and specified as either activated or not activated. The Per-Call Privacy (PCP) feature
is used to override the All-Call Privacy feature.
NOTE:
It is highly recommended that the same privacy configuration be provisioned
for all BRI lines ordered to reduce customer confusion and prevent difficulties in
future moves and changes.
All-Call Privacy Activated
When the All-Call Privacy feature has been activated at subscription time, the
CPN/BN for the BRI line is not sent to the destination station when the BRI line is used to
place an outside call. Using the Per-Call Privacy feature causes the CPN/BN for the
BRI line to be sent for the next call only.
8 Basic Rate Interface (BRI) Provisioning Guide