Product Overview; Key Features - Grandstream Networks HandyTone-286 User Manual

HandyTone 286 User Manual Grandstream Networks, Inc
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Product Overview

4.1 Key Features

• Support SIP 2.0, TCP/UDP/IP, RTP/RTCP, HTTP, ICMP, ARP, DNS, DHCP,
NTP/SNTP, TFTP protocols
• Support IETF STUN.
• Interoperable with various 3rd party SIP end user device, Proxy / Registrar
Server and gateway products.
• Advanced Digital Signal Processing (DSP) technology to ensure superior audio
quality
• Advanced and patent pending adaptive jitter buffer control, packet delay and loss
concealment technology
• Support popular vocoders including G.723.1 (5.3K/6.3K), G.729A/B, G.711 (alaw
and u-law), G.726 (40K/32K/24K/16K), G.728, and iLBC.
• Support standard voice features such as Call Waiting, Forward, in-band and out-of-
band DTMF, Dial Plans.
• Support Silence Suppression, VAD (Voice Activity Detection), CNG (Comfort
Noise Generation), Line Echo Cancellation (G.168), and AGC (Automatic Gain
Control)
• Support DIGEST authentication (MD5, MD5-sess)
• Provide easy configuration through manual operation (voice prompt along with phone
keypad and Web interface) or automated centralized configuration file.
• Support for Layer 2 (802.1Q VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ,
MPLS)
• Remote software upgrades capability via TFTP
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