General information
10
Single-line Telephone/Multi-line Telephone
Your Octophon F640 TDM is a "multi-line telephone". This means that your service personnel
can configure multiple lines on your phone, which is not the case with single-line phones.
Each line is assigned an individual phone number which you can use to make and receive
calls.
The programmable sensor keys function as line keys on multi-line phones
When using a multi-line phone to make and receive calls, certain particulars must be taken
into account
Executive/secretary Functions
These are to be set up by your service personnel. You can use executive/secretary functions
(outer office functions) along with the basic and enhanced functions. A telephone with the
outer office configuration can be recognized by the "executive" or "secretary" line keys for di-
recting calls to the executive or secretary. On the executive and secretary phones, you will
find an additional "transfer call" key, and on the secretary phone, also the keys "pickup" and
"substitute".
Using the Telephone Efficiently
• You probably have certain colleagues or external parties with whom you talk on the
phone especially frequently. To dial these numbers faster and more conveniently, you
can save them on keys
(Saving station numbers for repertory dialing on keys
• All too often you reach a busy line when dialing a number. Amid the confusion of your
working day, it’s easy to forget to try the number again later on. To avoid this, make it a
habit to use the "Callback"
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