Manual

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