ATA-17X series contain four models of gateway products: ATA-171, ATA-172, ATA-171P, ATA-171M. With outstanding design and dazzling appearance, Welltech ATA-17X series satisfy all users and meet their different requirements.
ATA-171/172 is one/two port analog telephony adapter, and user can connect with one/two analog phone set to enjoy VoIP calls.
ATA-171P is one-port analog telephone adapter plus one PSTN backup life line, which allows user to dial and receive PSTN or VoIP call in one identical phone set. |