The BT-2008-D is your best choice for a standards-based Voice over IP telephone. and it delivers both traditional telephone capabilities and new, converged applications to your business desktop.Its infrastructure includes public switched telephone network (PSTN) gateways, analog phone support, and digital signal processor (DSP) farms.It combine the functions of a traditional telephone with an Ethernet connection. It is a Windows-based application for the PC that offers IP functionality in conjunction with a Bitcal IP phone or as a standalone end station. It works with ADSL, Cable Modem, LAN etc., saving cost by using ISP.

Main Characters:

1,with a two-port Ethernet jacks 2, Standalone operation, no computer needed  3, Uses broadband cable/XDSL or network connection for high quality voice over IP 3, Supports Sip, H.323 v4, compatible with most of the H.323 V1-V4 system and equipment  4, Large LCD screen display  5, With Single/double RJ45 broadband socket 6, With H.323 proxy server inside  7, Startup H.245 tunnel quickly 8. Supports H.245 and Q.931 keypad out-band DTMF transfering method 9, Send and receive incoming caller ID with Q.931 protocol  10, Supports calling directly to IP address  11, Supports E.164 telephone number calling when gatekeeper used  12, Search the gatekeeper in LAN automatically  13, Supports calling to PSTN normal telephone with prepaid card issued by ITSP (net2phone, etalk etc.)  14, Supports PPPoE (connect to internet with ADSL and cable modem)  15, User can set the phone with standard web browser(Internet explorer 6.0) or using telnet software  16, Online software upgrade with fttp  17, Supports G.723.15.3k/6.3k G.729, G.711A-Law、μ- Law voice encoding and decoding arithmetic  18, Dynamic voice inspection, CNG (Comfort noise generation) , Dynamic voice jitter buffer  19, According with G.165 16ms echo counteraction  20, According with ITU-T standard tone(dialing tone, busy tone etc.) and DTMF tone generation and inspection 2 21, Supports the dialing rule basing on E.164 coding  22, Up to 112 groups of fast dialing numbers 23, 40 groups of incoming and outgoing numbers in memory  24. Full Duplex Speakerphone 25, 16 groups of voice message; volume of handset adjustable; volume of speaker adjustable; voice guide

Main characters:

Data memory - 2MB SDRAM  10/100Base-T, with 2 port HUB function 256KB Flash Memory G.165/168 16ms Echo cancellation, Bandwidth transmision:5.3k/6.3k 486 DX66 or above processor / 32MB RAM / 20MB Free hard disk Windows 98 / 98SE / ME / 2000 Operation system Voltage:DC 9V Power Adeptor:Intput:AC 220V,Inpout:DC 9V 500m

Standard and Protocal:

IEEE 802.3 /802.3 u 10 Base T / 100 Base TX Audio codec include G.723.1 6.4k/5.3k, G.729, G.711 A/u-law  H.323 V4 MGCP RFC2705 SIP RFC2543 Net2phone private protocol TCP/IP: Internet transfer and control protocol RTP: Real-time Transport Protocol RTCP：Real-time Control Protocol VAD/CNG save band with G.723.1 G.729 DHCP：Dynamic Host Configuration Protocol PPPoE：Point to Point Protocol over Ethernet DNS：Domain Name Server Telnet：Internet's remote login protocol FTP：File Transfer protocol HTTP：Hyper Text Transfer protocol Build in H.323 proxy