Interphone
Frequency scope:400-430mhz communication distance:5-10 kilometers shoot the power:2.5w/6.0v receive intelligent degree:0.13 uvs below the frequency takes the width:20mhz the frequency really lose:5% of _ channel number:100 a halfs a work physical volume:a - a - 23 mms weight:300 gs( contain the battery weight) the biggest frequency is partial to:miscellaneous a radiation _ 60 bds the electric current of state:10ma shoot the electric current:800ma power supply electric voltage:6v
Export standard
Voip phone Two separated uart for cpu and dsp+32-bit risc cpu with 125mhz clock rate+16-bit fixed-point dsp with 125mhz clock rate+max. Support 32mbytes sdram and 16mbytes flash Support 1 line for voip call, sip(rfc2543, arfc3261)+phonebook with 100 groups memory+ Network protocoltftp client/dhcp client/ pppoe client+telnet/http serverdns client+ipftcpfudpf rtpfrtcp+ipficmpfarpfrarpfsntp Voice qualityvad: voice activity detection+cng: comfortable noise generato+lec: line echo canceller+packet loss compensation+adaptive jitter buffer+ Codecg.711: 64k bit/s (pcm)+g.723.1: 6.3k / 5.3k bit/s+g.726: 16k / 24k / 32k / 40k bit/s (adpcm)+g.729a 8k bit/s (cs-acelp)+g.729b: adds vad & cng to g.729+ Call functioncall hold+call waiting+call forward+caller id+3-way conference Dtmf functionin-band dtmf+out-of band dtmf+sip info+ Sip serverregistrar server (three sip account)+outbound proxy+ Phone functionvolume adjustment+speed dial, phone book+flash+speaker phone+ Ip assignmentstatic ip and dhcp+pppoe support for adsl or cable modem+ G securityhttp 1.1 basic/digest authentication for web setup+md5 for sip authentication (rfc2069/ rfc 2617)+
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