AASTRA DT690 for BusinessPhone User Guide EN - Manual (Page 120)

1424-EN/LZT 103 092 Uen D 2010-02-12 120
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21 Useful Hints
This chapter contains details about external calls.
21.1 Connections Between External Lines
The BusinessPhone Communication Platform allows you to establish an
external call diversion or a conference with more than one external party,
or transfer an external call to another external destination (for example,
a mobile phone). These features are useful for everyday business life.
Note: When these features are used, the BusinessPhone Communica-
tion Platform will occupy at least two external lines.
However, there can be disadvantages with connecting to several
external lines. Therefore, we would like to draw your attention to the
following:
• Do not transfer external calls to an external mailbox, to
information systems, or to external parties before they
have answered.
• If you are connected to two external lines, cancel one call by
pressing R and 1.
If the external party is not an individual but a mailbox, an automated
information system or attendant system, etc., connections on external
lines can last a long time, which can be costly. Moreover, such calls may
occupy two of your system’s external lines. You can restrict connections
between the external lines by reprogramming your system.
For more information, contact the system administrator.