HP Poly Electronics Hookswitch USB APU-71 Cortelco Telephones supporting either the DHSG standard

supporting either the DHSG standard or the AEI standard

Features 8 phone compatibility settings

For Smith Corona

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HP Poly Electronics Hookswitch USB APU-71 Cortelco Telephones supporting either the DHSG standardElectronic Hook Switch Cable for remote desk phone call control (answer end). This cable eliminates the need for a HL10 Handset Lifter. This cable works with Cisco and Nortel desk phones and may work with additional manufacturers, check compatability PRIOR to ordering. Electronic Hookswitch Cable for Cisco, Avaya Nortel phones Eliminates the need for a HL10 Handset Lifter Replaces APU 71 cable and features compatibility with the Plantronics On Line