The external call transfer – is the call transfer to a telephone line other than the company’s telephone line. The internal call transfer – the transfer of an incoming call to another addressee registered on the same telephone line.
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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