Aastra 6771, User Manual

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Telephoning
53
DTMF Postdial/VF Signalling
Depending on the system’s configuration, your telephone is automatically set to VF
(voice frequency) signalling in the connection state. You can use this, for example, to
query an answering machine or a voice mailbox. Consult your system administrator if
you have questions concerning this function.
Keypad Dialling
A number of European network operators need the keypad protocol to set features.
Depending on your system configuration your telephone could be set to keypad
dialling during the connection state. If this is not the case, you must switch your tele-
phone over to the keypad protocol – before dialling – and enter the code digits spec-
ified by the network operator. These are transmitted directly to the exchange and
evaluated there. You usually get an announcement as an acknowledgement. Consult
your system administrator if you have questions concerning this function.
Switching to Keypad Dialling
Note
In the call state, keypad dialling is automatically active. Once the called subscriber
answers the call, which could be an external answering machine for example, you
can execute the required functions by pressing the number keys.
For the System Administrator:
Authorisation for keypad dialling is set in the Configurator , menu User Manager:
User groups (Setting: Keypad dialling ).
H * 1
2
This switches your telephone over to the keypad protocol. You
can now enter the code digits for the appropriate keypad.