Telephoning General Functions
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2.2 General Functions
2.2.1 Assignment of Internal and External Call
Numbers
Your telephone’s internal number is assigned when the system administrator con-
figures the OpenCom 100 communications system. The call number is linked to
the call key
g of your telephone, which means you receive calls on this key.
You can have several internal call numbers on different call keys on your system
telephone. The external call number(s) at which you can be reached is (are)
assigned to the call key(s) (with the internal number).
Example of the assignment of internal and external call numbers
The above example shows that the system’s external call numbers are first stored
in the OpenCom 100. The telephones can be reached selectively by means of call
distribution of the numbers to the internal numbers (call keys). As you see,
telephone 1 and telephone 2 both ring when a call is made to the number
4701 1234. At the same time, telephone 1 can also be reached on the number
4701 1678.
2.2.2 Signalling on the Call Keys
“Call key” is the general term for all keys of your telephone which you use to make
calls and are called. These are feature keys (please refer to page 15 and page 16
also) or call keys with team functions (team keys, busy keys or direct call keys,
please refer to the chapter Managing Calls in a Team starting on page 86).
4701 1678
4701 1234
4701 1345
4701 1456
External telephone
numbers
Call distribution scheme
Communications system
Internal telephone numbers
on the call keys
Telephone 1
Telephone 2
Telephone 3
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