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Specific Caller ID Situations 429
Bridged Extension
Telephones
Caller ID information appears in exactly the same way on a bridged
extension telephone as it does on a non-bridged extension telephone.
See “
Caller ID” on page 427 and “Long Caller ID Character Strings” on
page 427
.
Calls That Are
Forwarded Multiple
Times
If a call is forwarded several times, the Caller ID information of the
original caller appears on the top line of the display panel of the ringing
telephone and the Caller ID of the telephone that most recently
forwarded the call appears on the bottom line. A greater than (>)
character appears to the left of the original Caller ID on the top line in the
telephone display panel.
Example: A places a call to B, who answers the call and forwards it to C,
whose telephone is forwarded to D. While telephone D is ringing, the top
line in the display panel contains the Caller ID for A and the bottom line
contains the Caller ID for C. After 5 seconds, only the Caller ID
information for A appears.
External Calls The display of Caller ID information for external calls depends on how the
call arrives at the NBX system.
External Analog Line Card Calls
An external call arrives at an NBX system on an Analog Line Card port
and is routed to A’s telephone.
When A transfers the call to B, the Caller ID (if any is provided by the
telephone company) appears in the top line of B’s telephone display
panel. If no Caller ID information is available, the extension associated
with the Analog Line Card port appears on the top line. A’s Caller ID
information appears in the bottom line.
Exception: An Analog Line Card port is mapped to an internal extension.
The call is not answered and goes to the call coverage point for the
extension. If the coverage point is the receptionist’s telephone, for
example, the receptionist sees the Caller ID information only for the
external call, and not for any telephone on which the mapped Analog
Line Card Port appears.