Poly ATA 402 Adapter for VoIP Phone

Built with a high-performance, system-on-a-chip platform to ensure high-quality voice conversations, the Poly ATA 402 Adapter is a dedicated system targeted at applications for VoIP services. It has high availability and reliability because it’s always-on to make or receive calls. If you are using this device, you don't need to use a computer or have a computer turned on to talk to people. It provides SIP Service Provider support for up to four SIP accounts.