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.
Alturaphone
Alturaphone is an IP telephony service and technology provider. We offer personalized services for businesses, resellers and distributors. Alturaphone provides VoIP services such as VoIP wholesale with a prepaid platform, GSM to worldwide VoIP termination
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