A group of users can be created with a purpose of receiving voice announcements through the speaker of a telephone set, but it has to be in the waiting mode.
Polycom SoundStation Duo is a versatile conference phone that works with both analog and IP- phone lines. This makes it a unique device - in fact, two phones in one! With this conference phone you will not need to figure out what type of line your colleagues or partners use. Polycom SoundStation Duo provides full communication through public telephone lines and IP-telephony lines.