AASTRA 7446ip (5446ip) for MX-ONE User Guide EN - Manual (Page 33)

IP P HONE FOR MX-ONE™
33 6/1553-DBC 446 01 Uen E8 2010-07-08
SIP Phones
1) Press the numeric key 6 and wait for a dial tone.
2) Dial the complete external number, part of it or no number.
3) Dial # and tap the Call button. The callback indicator icon is high-
lighted.
4) Replace the handset.
6.2.2.2 Answering Callback when all External Lines are Busy
(Available in H.323 phones only)
When you try to make a call and hear a congestion tone instead of a dial
tone, it means that all external lines are busy.
As soon as an external line becomes free, you will be called back. Then
lift the handset (or press the loudspeaker button to use the speaker-
phone). You have to answer within 8 seconds, otherwise the callback is
cancelled. When you answer, the external number you have called is
automatically transmitted, but you may have to dial any remaining digits.
6.2.3 Call Waiting
If the calling party has activated the CallWaiting feature in their phone,
and the system administrator has configured your phone to accept Call-
Waiting calls, the Line 2 button blinks to indicate that a second incoming
call is waiting.
6.2.3.1 Activating Call Waiting
To send a call waiting signal to the busy number, do the following:
Tap the CallWaiting button or press the numeric 5 when you get a busy
tone.
Note: If the CallWaiting feature cannot be used due to categorization,
you will continue to hear a busy tone.
If the busy extension ignores the CallWaiting indication, you can order
automatic Callback, see 6.2.1 Callback on page 30.
6.2.3.2 Answering a Call Waiting Signal
To answer a waiting call, tap Line 2. The first call is put on hold automat-
ically. To terminate the ongoing call, press C before answering the
second call by tapping the line button.