http://arttel.ru
4.4.1
Configuring Busy on Busy
This feature rejects an coming call if you're already in an active call on either the IP phone or
Lync client. It plays a busy signal to the caller.
User's Manual
http://arttel.ru/shop/ip-telefony/ip-telefon-audiocodes-440hd
28
430HD and 440HD IP Phone
Document #: LTRT-11934