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.
Universal Phone Systems, Inc.
Our mission is to provide the world with quality service, the best alternatives of communication, at a regional, national or international level, "THE OPTION FOR COMMUNICATIONS".Universal Phone Systems, Inc., was founded with the goal to implement differe
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