Calling Party Number/Billing Number - AT&T MERLIN LEGEND Reference

F e a t u r e s

Calling Party Number/Billing Number

Description
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/BN is used by the central office to identify lines.
The caller can specify if the CPN/BN should be private.
NOTE:
For Primary Rate Interface (PRI) users, CPN is known as the station identification
(SID) number.
On the receiving end, the calling information shown on the display depends on
how the MERLIN LEGEND BRI service is configured at the central office:
Only CPN is displayed, if available
Only BN is displayed, if available
CPN is the preference and is displayed, if available; otherwise, BN is
displayed, if available
BN is the preference and is displayed, if available; otherwise, CPN is
displayed; if available
NOTE:
Depending on your central office, restrictions may prevent the delivery of either
or both of these numbers.
The CPN/BN information is shown only on MLX display telephones, and not on
analog multiline display telephones or single-line telephones. However, when a
call is received on a BRI line, the analog display telephone shows the label
programmed for the BRI line.
When the caller's Calling Party Number information is available from the 5ESS
central office, the information is shown on page 1 of the MLX display telephone.
The number the caller dialed to reach the MERLIN LEGEND system is shown on
page 2.
NOTE:
For calling groups, the information is reversed: the number the caller dialed is
shown on page 1 and the CPN information is shown on page 2.
Figure 3-1 shows the information that appears on the different types of MLX display
telephones when a call is ringing on a BRI line. On these displays, the BRI line number
is 801, the label programmed for the BRI line is "BRI, " the Calling Party Number is
"505-555-7000," and the number the caller dialed to reach the user is "610-555-1234."
Calling Party Number/Billing Number
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