Grandstream HandyTone 502 View full size

Grandstream HandyTone 502

The Grandstream HandyTone 502 (HT502) is a VoIP ATA that features 2 FXS ports, and dual 10M/100Mbps.

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Grandstream Handytone 502

The Grandstream Handytone 502 is the next generation of powerful, affordable, high quality and manageable IP telephony ATA/IAD for residential users and road warriors. Its compact size, excellent voice quality, packed feature functionality and market leading price-performance point enables all consumers to maximize the power of IP voice and data connectivity for a minimal investment.

The HT502 is SIP 2.0 standard compliant and features 2 FXS ports, dual 10M/100Mbps Ethernet ports with integrated high performance NAT router, port status and message waiting LED, and a base stand for vertical positioning. It supports Universal Plug-in-Play (UPnP), up to 2 SIP account profiles, and traditional and advanced telephony features.

The HT502 provides an enhanced level of security and provides automated provisioning using symmetric and asymmetric voice codec/RTP in any call sessions, and supports a broad range of popular voice codecs.

Grandstream Handytone 502 Key Features
  • 2 FXS telephone ports (RJ11), dual 10/100 Mbps network ports (rj45) with integrated high performance NAT router
  • Status LED for power, telephone and network ports, and message waiting indication
  • Advanced telephony features including caller ID, call waiting, 3-way conference, transfer, forward, do not disturb, message indication, multi-language voice prompts, T.38 fax, flexible dial plan, direct IP calling
  • Comprehensive voice codecs including G.711(a/u-law), G.723.1, G.729A/B/E, G.728, G.726-40/32/24/16 and iLBC
  • UPnP, secure and automated provisioning using HTTP/HTTPS/Telnet/TFTP
  • Up to 2 SIP account profiles, SIP over TCP/TLS
  • Symmetric and asymmetric voice codec/RTP in any call sessions 


Grandstream Handytone 502 Features
  • Telephone Interfaces
    • 2 FXS Ports (RJ11)
  • Network Interfaces
    • Two (2) 10m/10mbps ports (RJ-45)
  • LED Indicators
    • Power, Wan, Lan, PHONE1 and PHONE2
  • Reset Button
    • Factory Reset Button
  • Telephony Features
    • Caller ID display or block, call waiting with caller ID, flash, blind or attended call transfer, hold, call forward, do not disturb and 3 way conferencing
  • Voice Codec
    • G.711 Annex 1 (PLC) and Annex II (VAD/CNG format), G.723.1A, G.729A/B/E, G.728, G.726-40/32/24/16, iLBC
  • Voice over Packet Capabilities
    • Voice Activity Detection (VAD) with Comfort Noise Generation (CNG) and Packet Loss Concealment (PLC), Dynamic Jitter Buffer, G.168 compliant Line Echo Cancellation
  • Fax over IP
    • T.38 compliant Group 3 Fax Relay up to 14.4kpbs, Fax Datapump V.17, V.19, V.27ter, V.29 for T.38 fax relay
  • DHCP Server/Client - NAT Router
    • Yes, can operate in NAT router or Switched Mode
  • Network Protocols
  • QoS
    • Support Layer 2 (802.1Q VLAN, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS
  • IP Signaling
    • SIP (RFC 3261), SIP over TCP/TLS, up to 2 SIP account profiles, symmetric and asymmetric RTP/codec in any call sessions
  • DTMF Method
    • RFC2833, and/or SIP INFO
  • Provisioning & Management
    • UPnP, TFTP, HTTP, HTTPS, Telnet, secure and automated provisioning system for large deploymeny, syslog
  • Caller ID
    • Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF based CID
  • Universal Power Supply
    • Output: 12VDC, 0.5A; Input: 100-240 VAC, 50-60Hz



Ethernet Ports

2 RJ45 10/100 Mbps





FXS Port


Fax Support

Pass-Through via G.711 and T.38

Audio Codecs

G.711(a/u-law), G.723.1, G.729A/B, G.729E, G.728, G.726-40/32/24/16 and iLBC

Call Features

Caller ID, call waiting, 3-way conference, blind and attended transfer, call forward, do-not-disturb, voicemail, and more

Remote Configuration

Secure and Automatic via TFTP/HTTP/HTTPS/Telnet

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Grandstream HandyTone 502

Grandstream HandyTone 502

The Grandstream HandyTone 502 (HT502) is a VoIP ATA that features 2 FXS ports, and dual 10M/100Mbps.

Write your review