GRANDSTREAM HT812, HT814 Handy Tone Analog VoIP Gateway User Guide
Learn about the features and technical specifications of the Grandstream HT812 and HT814 Handy Tone Analog VoIP Gateways in this user manual. Connect your analog phones or fax machines to a digital VoIP network with this powerful gateway supporting various voice codecs, telephony features, and protocols/standards.