Model: Grandstream handytone HT286
Specifications
Support SIP 2.0, TCP/UDP/IP, RTP/RTCP, HTTP, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP protocols
Support NAT traversal using IETF STUN and symmetric RTP (compatible with Cisco�s ATA-186, etc)
Advanced Digital Signal Processing (DSP) to ensure superb hi-fidelity audio quality
Provides 1 LAN port and 1 FXS interface for any analog telephones, cordless phones, and fax machines
Support transparent Fax pass-through and in the future T.38 (pending)
Interoperable with various 3rd party SIP end user device, Proxy/Registrar/Server, and gateway products
Advanced and patent pending adaptive jitter buffer control, packet delay and loss concealment technology
Support popular codecs including G.723.1 (5.3K/6.3K), G.729A/B, G.711 (a-law and u-law), G.726, and
G.728. Dynamic negotiation of codec and voice payload length
Support standard voice features such as Caller ID Display or Block, FLASH, in-band and out-of-band DTMF (RFC2833), Dial Plans, off-hook auto dial, early dial, click-to-dial
Support acoustic echo cancellation, voice mail with indicator, downloadable ring tone (pending)
Support Silence Suppression, VAD (Voice Activity Detection), CNG (Comfort Noise Generation), Line Echo Cancellation (G.168), and AGC (Automatic Gain Control)
Support DIGEST authentication and encryption using MD5 and MD5-sess.
Provide easy configuration thru manual operation (attached analog phone keypad and voice prompt, Web interface) or personalized automated provisioning via central configuration file for mass deployment.
Support for Layer 2 (802.1Q VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ, MPLS)
Support for fail-over SIP server and DNS server (pending)
NAT-friendly remote software upgrade capability (via tftp) even from behind firewalls/NATs.
Grandstream handytone HT286 / HoSunn Tech
Lables: Grandstream VoIP Gateways,SIP VoIP Gateways,FXS Gateways
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