AASTRA 600c_d for OpenCom 1000 User Guide EN - Manual (Page 44)

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Basic functions
Call keys / select line
The term “call keys” is taken from corded system phones, which have individual keys for making
calls. On the handset they are represented in the Call keys menu as virtual keys on a list. In menus
which are displayed to you depending on the handset’s connection status, you can access these
“keys” by selecting Select line. Where provided, these are the “keys” which you use to make and
receive calls. To open the key menu use a short or long keypress of the menu key ❯❯❯ – depending
on the device state. Access to the call keys
can also be programmed under a key. The system
administrator will set up the call keys for you when configuring the communication system.
There are different categories of call keys, depending on their function:
Key designation Function
Device key This key is stored with your internal device call number.
INTERNAL key(s) For each terminal there is at least one internal call key (INTERNAL
key) in the system administration. This INTERNAL key corresponds to
the device call number.
If other INTERNAL keys have been set up on your phone, you can use
these keys to make and receive calls to and from internal
subscribers.
EXTERNAL key(s) You can use these key(s) to seize an external line and to receive
calls.
Direct call key with signalling Call key that only allows a connection to be set up with one
particular destination (internal call number).
Device key
The device key is stored with your internal device call number (main phone number). It is labelled
with your internal call number (or alternatively with a text programmed by your system administra-
tor).
INTERNAL keys and EXTERNAL keys
Besides your device key other call keys can be set up on your phone. These keys allow you to make
and receive internal and external calls. Each of the keys has its own call number.
Calls from internal subscribers are signalled on INTERNAL keys. In the case of an EXTERNAL key your
internal call number is assigned to an external call number under which you can be reached from
the outside. Several external call numbers may be assigned to the key.
To make a call, seize one of your INTERNAL/EXTERNAL keys by pressing the call key; you can then
make an external or internal call immediately (depending on the system setting), see the section
entitled “Making internal/external calls” on page 41ff.