1.Dial the code for the "DTMF end to end dialling" function.
2.Then dial the digits to be sent as DTMF signals.
This function ceases to operate when you hang up.
Note: If you know in advance that you are going to have to send DTMF signals, you can prepare them in advance. Simply programme one key with the number you want to call, then the code for the "DTMF end to end dialling" function, followed by # and the digits to be sent. They will automatically be transmitted once the call is put through.
Putting a caller on common hold
If you are one of a group, and you are in conversation with a caller on an internal or external line, you can put him on common hold.
You must have a key programmed with the "Common hold" function.
You can put your correspondent on common hold (LED lit up fixed) and then press this key to retrieve the call.
The fact that he is on hold is indicated to all other members of the group who have a common hold facility and will be indicated by a flashing LED.
Any one of them can then pick up his call by using their common hold key.
Calling an ISDN correspondent
You can have access to ISDN services.
1. 
ISDN
C A L L S
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