HandyTone 503 (HT503) ATA/IAD

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.

  • 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 mutli language voice prompts and transfer to or forward to IP or PSTN

  • 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
  • Dual 10/100 Mbps network ports (RJ45) with integrated high performance NAT router
  • Status LED for power, telephone, PSTN line, network, and message waiting indication
  • Advanced telephony features
  • Comprehensive voice codecs
  • Secure and automated provisioning using HTTP/HTTPS/Telnet/TFTP
  • Symmetric and asymmetric voice codec/RTP in any call sessions
  • T.38 Fax
  • SIP over TCP/TLS
  • IP connectivity for any phone and fax
  • Hop-on/Hop-off calling
  • Web management for easy configuration and installation
  • Offers traditional and advanced telephony features
  • Portable and compact for use at home or on the road
HT503 Product Brochure/Specifications
Ethernet Ports 2 RJ45 (LAN/WAN)
NAT/Router Yes
DHCP Client/Server
FXS Port 1
FXO Port 1
PSTN Pass-through Port Yes
Voicemail Indicator Yes
Voice Codec G.711(a/u-law), G.723.1, G.729A/B/E, G.726-40/32/24/16 and iLBC, T.38 fax
Remote Configuration HTTP/HTTPS/Telnet/TFTP Provisioning

     Additional Specifications . . .

User Manuals

HT286 User Manual

HT502 User Manual

HT503 User Manual

HT Series Quick User Guide

Quick Installation Guides

HandyTone Quick Installation Guide

Declaration of Conformity

Declaration of Conformity Grandstream HT-503

Marketing Documents

Grandstream ATAs and Gateways Comparison Chart

FAQ

HandyTone Series FAQ

White Papers

HT503: Hop-on/Hop-off Scenario

HT503: Peer to peer calling

Peer-to-Peer Gateway with multiple HandyTones

HT503: XML Provisioning Guide

Grandstream TR-069 Information

Grandstream Provisioning Guide

Datasheets

Power Consumption Datasheet

Firmware

Firmware Download

Tools

Tools, Utilities, and Configuration Templates

Grandstream Device IP Discovery Tool

GNU General Public License

GNU GPL Download