AASTRA 4420 IP Basic (SIP) for MX-ONE User Guide - Manual (Page 16)

Incoming Calls
Dialog 4420 IP Basic 16
Notes:
U.K., dial
* 2 *
Number
#
.
The Follow-me key cannot be used to disable Parallel
Ringing.
Press.
The Follow-me key lamp is now on.
To restore Parallel Ringing #21#
Dial and press.
The Follow-me key lamp is off.
Notes:
U.K., dial
# 2 #
.
If you want to restore Parallel Ringing for all phones defined
in the list, follow the procedure for restoring the feature from
the phone with the main extension number and enter the
number of the answering position.
If you want to restore Parallel Ringing for one specific phone
in the list only, follow the procedure for restoring the feature
from this phone and enter its extension number.
The Follow-me key cannot be used to restore Parallel
Ringing.