3-Way Calling
This is a conference which can be initiated from every VoIP telephone. The service is fully administered with the help of a telephone set.
This service can be very convenient for people who run small or big business, especially if offices are located in different cities or countries.
Grandstream has introduced us with a new device model. This new handset, according to characteristics, can rival Gigaset and Panasonic. The main advantage of this device is 4 simultaneous calls to one base, allowing a registration of up to 5 handsets.
ISG | Network Billing Systems (NBS)
With state-of-the-art corporate headquarters in Wayne, New Jersey, the ISG family has evolved into a multi-divisional organization serving over 750,000 customers from coast to coast. Today ISG is positioned at the forefront of global technology with a str
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