Grandstream HT-502 2FXS Analog VoIP Adapter
Overview
The Grandstream HT-502 is the newest in the HandyTone Analog Telephone Adaptor Series. The HandyTone 502 offers more powerful feature functionality and significantly better data router performance than its predecessor, as well as a new stylish look and design.The Grandstream HT-502 is based on SIP standard 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. The Grandstream Handytone 502 supports UPnP, SIP over TCP/TLS, up to 2 SIP account profiles, caller ID, call waiting, 3-way conference, blind or attended transfer, call forward, do not disturb, voicemail, T.38 fax, flexible dial plan, direct IP calling, multi-language voice prompts, secure and automated provisioning using HTTP/HTTPS/Telnet/TFTP, symmetric and asymmetric voice codec/RTP in any call sessions, and various popular voice codecs including G.711(a/u-law), G.723.1, G.729A/B, G.729E, G.728, G.726-40/32/24/16 and iLBC.
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Features
- Supports UPnP, SIP over TCP/TLS
- Up to 2 SIP Account Profiles
- Caller ID
- Call Waiting
- 3-Way Conference
- Blind or Attended Transfer
- Call Forward
- Do Not Disturb
- Voicemail
- T.38 Fax
- Flexible Dial Plan
- Direct IP Calling
- Multi-Language Voice Prompts
- Secure and Automated Provisioning using HTTP/HTTPS/Telnet/TFTP
- All-in-1 VoIP IAD
- Built-in Router, NAT and Gateway
- 2 FXS Port
- 10/100Mbps Ethernet
- Compact, Lightweight and Highly Affordable
Telephone Interfaces
- 2 FXS ports
- 2 SIP accounts
Network Interface
- Two (2) 10M/100 Mbps
- RJ-45
LED Indicators
- Power
- WAN
- LAN
- PHONE1
- PHONE2
Reset Button
- Factory Reset button
Voice over Packet Capabilities
- Voice Activity Detection (VAD) with CNG (comfort noise generation)
- PLC (packetloss concealment)
- Dynamic Jitter Buffer
- Modem detection & auto-switch to G.711,
- Packetized Voice Protocol Unit (supports RTP/RTCP and AAL2 protocol)
- G.168 compliant Echo Cancellation
- LEC (line echo cancellation) with NLP
- Asymmetric RTP stream
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Voice Compression
- G.711 + Annex I (PLC)
- Annex II (VAD/CNG format) encoder and decoder
- G.723.1A
- G.726(ADPCM)
- G.729A/B/E
- iLBC
- G. ...