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ISDN Facilities
BusinessPhone – IP Telephone Dialog 3413
50
ISDN Facilities
This chapter is only relevant when your system is connected to a
digital trunk line (ISDN-trunk line). It provides a general view of
some (supplementary) services available from the public 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.
Number identification
The main difference compared to the analog public net is the
number identification between the connected parties.
When you establish an outgoing external call, the public number of
your system and your extension number will be sent to the called
party. If you call someone who has diverted his extension, the
display shows the number of the extension where the call is
diverted to.
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.
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12 May 2001
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