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.
Gnex Technology Co.,LTD are the company with many years experience on voip hard developing & producing.Our products line is mainly from VOIP Phone,Voip Gateway,VOIP USB Phone,PABX,IPPBX.GSM Gateway,GSM E1 Gateway,GSM VOIP Gateway,E1 Media Gateway and ect.
Read more