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.
Plantronics Calisto P835M is USB speakerphone optimized for work with Microsoft Office Communicator and Microsoft Lync. Calisto P835M is the first speaker in UC product family line, which unifies the possibility of simple call management and simultaneous work with cell phone, computer and analog telephone line.