Making a call28 Aastra 6735i/6737i/6755i/6757ieud-1619/1.0 – R3.0 – 09.2013Answering the callback requestYou cannot automatically answer a callback request on your Aastra SIP phone.Private call with PINYou want to make a private call on your phone or on a third-party phone.With the aid of your PIN you can use any phone to make an external call with yourown personal settings, even if that phone is locked for external calls. The called party'sdisplay shows your personal phone number and not the number of the phone fromwhich you are making your call. Any call charges incurred will be charged to you.The call number dialled is not stored in the last-number redial list.Using functions while in a callThis section explains the special features provided by your phone while you arein a call.Putting a call partner on holdYou want to briefly interrupt the active call.You can put the call party on hold and then take them back again on the same phone. 1. Enter function code #46 followed by your internal call number.2. Enter your PIN.3. Enter the external call number directly, without the exchange access digit.Pick up the handset.➔ The phone is now enabled. The external user is called.Note:The default PIN setting ‘0000’ is not accepted (for more information on the PIN,see chapter "Changing the PIN", page 57).Putting the active call party on hold:Press the hold key.➔ The call party is put on hold and the LED on the line key flashes.Take back the call party on hold:Press the hold or the line key.➔ The call is active again.☛