System Functions and Features as of I7.9
122 Routing elements
syd-0200/3.0 – I7.9 – 11.2009
4. 10 General bell
Calls with the general bell as destination can be signalled visually or acoustically
using an external supplementary equipment. The call can be taken from any termi-
nal (see "Answering general bell", page 448).
4. 11 Key Telephones
Key telephones have several line keys and an personal key. For incoming traffic
each line key of a key telephone is a routing destination addressed using the rele-
vant call distribution element. This means for example that calls with a different
DDI number can be offered on any line key.
For outgoing traffic each line key is linked with a separate routing. This means for
example that a specific exchange line can be used for dialling by operating a line
key.
With the personal key a key telephone can be operated like an ordinary feature-
phone.
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