Grandstream HandyTone 503 (HT503)
Analog Telephone Adapter/IAD

Convert Analog Phones to VoIP

The HandyTone 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.

Feature Highlights:

• Based on SIP standard and interoperable with most 3rd party SIP compliant devices and software
• Dual 10M/100Mbps network ports, port status and message waiting LED, and a base stand for vertical positioning
• Traditional and advanced telephony features including multi-language voice prompts and transfer to or forward to IP or PSTN
• 4 SIP Server profiles per system and independent SIP account per port