Grandstream Networks HandyTone-286 - Manual (Page 6)

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HandyTone-286 User Manual Grandstream Sdn Bhd
3. Product Overview
3.1 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 (a-law
and u-law), G.726 (40K/32K/24K/16K), as well as G.728.
• Support standard voice features such as Call Waiting, Transfer, 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 thru manual operation (voce prompt along with the
analog 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 upgrade capability via TFTP