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Grandstream HandyTone ATA-286 is an award-winning next generation VoIP analog telephone adaptor based on industry open standards. Bult upon innovative technology, Grandstream HandyTone ATA-286 features market leading superb sound quality, compact size and rich functionalities at a highly-affordable price.
Features
SIP 2.0, TCP/UDP/IP, RTP/RTCP, HTTP, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP protocols
NAT traversal using IETF STUN and symmetric RTP (compatible with Cisco's ATA-186)
Advanced Digital Signal Processing (DSP) to ensure superb hi-fidelity audio quality
One LAN port and one FXS interface for any analog telephones, cordless phones and fax machines
Transparent Fax pass-through
Interoperable with various 3rd party SIP and user devices, Proxy/Registrar/Server, and gateway products
Advanced and patent pending adaptive jitter buffer control, packet delay and loss concealment technology
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 negotiationof codec and voice payload length
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, entry dial, click-to-dial
Acoustic echo cancellation, voice mail with indicator, downloadable ring tone (pending)
Silence Suppression, VAD (Voice Activity Detection), CNG (Comfort Noise Generation), Line Echo Cancellation (G.168) and AGC (Automatic Gain Control)
DIGEST authentication and encryption using MD5 and MD5-sess
Provide easy configuration thru manual operation (attached analog phone keypad and voice prompt, Web interface) orpersonalised automated provisioning via central configuration file for mass deployment
Layer 2 (802.1Q VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ, MPLS)
NAT-friendly remote software upgrade capability (via tftp) even from behind firewalls/NATs
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