The Handy Tone 503 offers the next generation of powerful, affordable, high quality and manageable IP telephony ATA/IAD. The integration of a FXO and FXS port enables remote call origination and termination to and from the PSTN line, known as "hop-on and hop-off" calling. This functionality coupled with its compact size makes it an ideal solution for road warriors seeking the savings and benefits of voice-over-ip communication.
- 1 FXS telephone port (RJ11), 1 FXO PSTN line port (RJ11) with power-outage life line support
- Up to 2 SIP account profiles, SIP over TCP/TLS, SRTP
- Based on SIP standard and interoperable with most 3rd party SIP compliant devices and software
- Traditional and advanced telephony features including multi language voice prompts and transfers to or forward to IP or PSTN