User guide

Basic Functions
34
Connections
Internal and External Call Numbers
Internal and external call numbers for reaching you are assigned during configu-
ration of the OpenCom 100 / Aastra 800 communications system.
Multiple Trunk Keys
Multiple trunk keys can be configured on your telephone (3 max. OpenCom 100 /
Aastra 800 communications system). Each of these keys has a separate internal call
number which – depending on the system configuration – can also be assigned to
a separate external call number. Ask your system administrator about the configu-
ration applicable to you.
When you have multiple trunk keys configured on your telephone, you can dial a
call number directly via one of these keys (for direct dialling and pre-dialling
please refer to the External/Internal Calling starting on page 42). The first trunk key
is designated the preference key if you do not make a selection.
When making a call from the redial list or from the caller lists, the respective trunk
key is automatically seized from which the original call was made.
Multiple Connections
Your device can handle two connections simultaneously, i.e. you can speak with
two callers at the same time, and switch back and forth between these connec-
tions (toggle) or conduct a three-party conference. Any further callers will hear a
busy signal.
When the system administrator has configured a call queue, any further calls are
given a place in the queue (please refer to the Calls in the Call-Waiting Queue
starting on page 37 section).
DTMF Postdial/VF Signalling
Depending on the system configuration, your telephone is automatically set to
VF signalling during a call. Use VF signalling, e.g. to query a voice message or
voicebox. Please contact your system administrator if you have questions
regarding this function.