If this function has been configured (contact System Support), you can use a dialing aid to dial numbers and set up calls for your telephone.
The operating procedure depends on whether the dialing aid is connected to the S0 bus or the a/b (T/R) port. 

You can also use your system telephone as a dialing aid for other telephones. 

Dialing aid on the S0 bus:

On the PC, select a destination and start dialing. 

The speaker on your telephone is switched on. Lift the handset when the other party answers. 

Dialing aid at the a/b (T/R) port:

On the PC select a destination and start dialing. 

"Lift the handset" appears on the PC screen. 

Lift the handset. 

Dialing aid from your telephone for another telephone:

Press the key. The LED lights up. 

Select and confirm. 

Enter the code.
 

Enter the internal station number ("Dial for:"). 

Enter the number you wish to dial.