The Grandstream BudgeTone 200 (BT-200) is a new entry level IP phone that is an enhancement of the popular BudgeTone 102 model. Compared with and in addition to all the existing features of BudgeTone 102, BT200 has dual 10M/100M Ethernet ports that can be configured as either switched or routed ports, built-in NAT router/DHCP server (router mode only), high quality full duplex hands-free speakerphone with acoustic echo cancellation, 2.5mm headset jack, visual voice mail indicator, and more memory for future function growth. It supports G.711, G.723.1, G.729A/B, G.726, G.722, and GSM codec. It supports XML, SIMPLE, SRTP, ZRTP (pending) and will support TLS via firmware upgrade in the near future.

Features & Benefits
   * Support SIP, TCP/UDP/IP, RTP/RTCP, HTTP, ICMP, DNS, DHCP, NTP, TFTP protocols
   * Support NAT traversal via STUN & symmetric RTP
   * Interoperable with various 3rd party SIP end user device, Proxy/Registrar/Server, and gateway products
   * Advanced Digital Signal Processing (DSP) to ensure superb hi-fidelity audio quality
   * Advanced and patent pending adaptive jitter buffer control, packet delay & 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, G.728, and wide-band G.722 (Model 102D). Dynamic negotiation of codec and voice payload length
   * Support standard voice features such as Caller ID Display or Block, Call Waiting, Hold, TransfForward, FLASH, in-band and out-of-band DTMF (RFC2833), Dial Plans, off-hook auto dial, configurable emergency dialing (e.g., 911), early dial, click-to-dial
   * Support 3-way conferencing (Model 102D), full duplex hands-fredomain acoustic echo cancellation (pending), redial, call log, volume control, voice mail with indicator, downloadable ring tone (pending)
   * Support Silence Suppression, VAD (Voice Activity Detection), CNG (Comfort Noise Generation), Line Echo Cancellation (G.168), and AGC (Automatic Gain Control)
   * Support DIGEST authentication and encryption using MD5 and MD5-sess.
   * Provide easy configuration thru manual operation (phone keypad and Web interface) or personalized automated provisioning via central configuration file for mass deployment.
   * Support for Layer 2 (802.1Q VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ, MPLS)
   * NAT-friendly remote software upgrade capability (via tftp) even from behind firewalls/NATs.
   * Support for fail-over SIP server and DNS server (pending)