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.
Beijing Sinoco Information Technology,Inc
Sinoco Information Technology Co.,ltd. is a high-tech enterprise committing itself to the manufacture of the VOIP terminal units
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