Home » Support » Telephone AdaptorsVoIP Telephone adaptorsHandyTone HT488 Analog Telephone Adaptor.HandyTone 488 User ManualHandyTone Installation GuideHandyTone HT486 Analog Telephone Adaptor.HandyTone 486 User ManualHandyTone Installation GuideHandyTone HT386 Analog Telephone Adaptor.HandyTone 386 User ManualHandyTone Installation GuideHandyTone HT286 Analog Telephone Adaptor.HandyTone 286 User ManualHandyTone Installation Guide