Grandstream HandyTone HT286 VoIP analog telephone adapter + 220V transformer power supply included.

Like New, Tested, Serviced

Characteristics:
- Lines/Accounts: 1 line/1 account
- Protocol support:
   SIP 2.0 (RFC 3261)
   TCP/UDP/IP
   RTP/RTCP
   http
   ARP/RARP
   ICMP
   dns
   DHCP
   NTP extension
   TFTP extension
   PPPoE protocols
- Function keys: 1 button
- LAN interface: RJ-45 10Mbps
- Device management:
   Web interface or via secure central configuration file (AES encrypted) for mass distribution
   It supports device configuration via built-in IVR, web browser or central configuration file via TFTP or HTTP
   Layer 2 (802.1Q, VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ, MPLS) support
   Automatic/manual supply system
   NAT compatible remote software update (via TFTP/HTTP) for devices deployed even behind firewalls/NAT
   Syslog support (up to Rev 2.0)
- DHCP server/client
- Audio features: 
   Advanced Digital Signal Processing (DSP)
   Dynamic negotiation of codec and voice payload length
   Support for G.723.1 (5.3K/6.3K), G.729A, G.711 μ/A, G.726 and iLBC codecs
   In-band and out-of-band DTMF (in audio, RFC2833, SIP INFO)
   Silence suppression, VAD (speech activity detection), CNG (comfort noise generation) ANG (automatic gain control), line echo cancellation (G.168)
   Adaptive control of the jitter buffer
   Packet delay and loss concealment
   It supports volume boosting
   Supports configurable call progress tones
- Call handling features:
   View or block your caller ID
   Call waiting caller ID
   Call Waiting/ Flash , Call Transfer 
   Jack 
   forward 
   mute
   3-way conferencing (on Rev 2.0)
- Network and Procurement:
   Manual or dynamic network configuration of host configuration protocol (DHCP); RTP and NAT support traversal via STUN
- Fax to IP:
   Fax Relay Group 3 compliant with T.38 up to 14.4 kpbs and automatic switch to G.711 for
   Fax pass-through (on hold)
   Fax Datapump V.17, V.19, V.27ter, V.29 for T.38
   fax forwarding
- Safety:
   DIGEST authentication and encryption via MD5 and MD5-sess
- LAN interface:
   1 RJ45 10Mbps
- FXS phone port:
   1 x FXS
-LEDs: Green and red/solid state and flashing state
- Universal Switching Power Adapter:
   Input: 100-240VAC 50-60Hz
   Output: +5V DC, 1200mA
   UL certified
- Dimension:
   65mm (W) x 93mm (D) x 27mm (H)
   Weight 0.26kg
- Temperature: 0 – 40oC
- Humidity: 10% – 90% (non-condensing)


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Grandstream HandyTone HT286 VoIP analog telephone adapter + 220V transformer power supply included.    Web interface or via secure central configuration file (AES encrypted) for mass distribution    It supports device configuration via built-in IVR, web browser or central configuration file via TFTP or HTTP    Layer 2 (802.1Q, VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ, MPLS) support    NAT compatible remote software update (via TFTP/HTTP) for devices deployed even behind firewalls/NAT    Silence suppression, VAD (speech activity detection), CNG (comfort noise generation) ANG (automatic gain control), line echo cancellation (G.168)    Manual or dynamic network configuration of host configuration protocol (DHCP); RTP and NAT support traversal via STUN    Fax Relay Group 3 compliant with T