Grandstream HandyTone 286

Lines/SIP Accounts

• 1 lines/1 SIP account

Protocol Support

• SIP 2.0 (RFC 3261)
• TCP/UDP/IP
• RTP/RTCP
• HTTP
• ARP/RARP
• ICMP
• DNS
• DHCP
• NTP
• TFTP
• PPPoE protocols

Feature Keys

• 1 button

LAN Interface

• RJ-45 10 Mbps

Device Management

• Web interface or via secure (AES encrypted) central configuration file for mass deployment
• Support device configuration via built-in IVR, Web browser or central
• configuration file through TFTP or HTTP
• Support Layer 2 (802.1Q, VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ,MPLS)
• Auto/manual provisioning system
• NAT-friendly remote software upgrade (via TFTP/HTTP) for deployed devices
• including behind firewall/NAT
• Syslog support (on Rev 2.0)

DHCP Server/Client

• Yes, 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 (voice activity detection), CNG (comfort noise generation) ANG (automatic gain control), Line Echo Cancellation( G.168)
• Adaptive jitter buffer control
• Packet delay & loss concealment
• Support volume amplification
• Support configurable Call Progress Tones

Call Handling Features

• Caller ID display or block
• Call waiting caller ID
• Call waiting/Flash, Call
• transfer
• hold
• forward
• mute
• 3-way conferencing(on Rev 2.0)

Network and Provisioning

• Manual or dynamic host configuration protocol (DHCP) network setup; RTP and NAT support traversal via STUN

Fax over IP

• T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for
• Fax Pass-through (pending)
• Fax Datapump V.17, V.19, V.27ter, V.29 for T.38
• fax relay

Security

• DIGEST authentication and encryption using MD5 and MD5-sess

LAN Interface

• 1 x RJ45 10 Mbps

FXS phone port

• 1 x FXS

Button

• 1

LED

• Green and red / solid state & blinking state

Universal Switching Power Adapter

• Input: 100-240VAC 50-60 Hz
• Output: +5VDC, 1200mA
• UL certified

Dimension

• 65mm (W) x 93mm (D) x 27mm (H)

Weight

• 0.57 lbs (0.26kg)

Temperature

• 32 – 104oF / 0 – 40oC

Humidity

• 10% – 90% (non-condensing)

Compliance

• FCC/CE/C-Tick

Ships With:

• HT-286 Main Case
• Universal Power Adaptor
• Ethernet Cable

Hardware

• 1 Mb Flash
• 256 Kb SRAM
• a TI TMS320VC5402 100 MHz DSP
• an RTL8019AS ISA 10 Mbit Ethernet controller
• a phone interface
• and some glue around that

These are quite cheap components (the most expensive part is the $6 DSP).

They work great though. Very easy to configure, excellent audio, great selection of codecs.

It has a handy lighted button, which doubles as a status/MWI and accesses a built-in IVR menu when pressed. Pressing the button twice puts the unit in “IP dial” mode.

See Also

• Grandstream Support Forum

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