32
Making a Call
If you use the keypad during a call, your EuroMaster Systel produces the correspond-
ing standard DTMF tones. These tones are used to control answering machines or for
the input of messages to pager services.
You can however switch to the keypad protocol, for example, to control new ISDN ser-
vices in the exchange.
Keypad Protocol
You are holding a conversation.
Press the "Keypad" softkey.
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P
P
O
The keypad keys no longer transmit
DTMF tones, instead they now transmit
the keypad protocol codes.
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P
P
O
Press the "DTMF" softkey to reinstate
DTMF transmission (touch-tone).
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