Isdn Facilities - Ericsson BUSINESSPHONE 250 User Manual

ISDN FACILITIES

ISDN FACILITIES
GENERAL
NUMBER
IDENTIFICATION
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NUMBER SECRECY
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DISPLAY RESTRICTED
Number secrecy
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This chapter is only relevant when your system is connected to
a digital trunk line (ISDN-trunk line). It provides a general
view of all the (supplementary) services available from the pub-
lic net which are supported by the system. The services from
the public net differ from market to market. Please ask your
system administrator which features are available.
The main difference compared to the analogue public net
is the number identification between the connected parties.
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When you establish an outgoing external call, the public
number of your system and your extension number will be sent
to the caller. If the number of the answering party is different
from the dialled one (for example, after a diversion), you will
also be informed about the answering party´s number.
When you answer an incoming external call on your phone
(or from another phone), you will see the caller´s number
on the display. Your public number will be sent to the caller.
By pressing a pre-programmed "number secrecy" key you
can choose not to show your complete number (public +
extension number) to the connected party.
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Press a pre-programmed key to suppress
your complete number to the public net
The lamp beside the key shows a steady light and the
function remains activated until the key is pressed again.
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BusinessPhone 250 - Executive Telephone
BusinessPhone 50 - Executive Telephone