Person-to-person realtime IP communications, like presence, VoIP and video applications, offer clear benefits for the enterprise as time- and money-savers. Unified functionality is now available, where all of the above are integrated into one streamlined application and interconnect with other networks. This creates a very important business tool and usage is increasing.
标签： Person-to-person communications applications realtime
上传时间： 2015-06-28
上传用户：维子哥哥
Integrated Services in the presence of Compressible Flows
标签： Compressible Integrated Services presence
上传时间： 2015-07-05
上传用户：lhc9102
有关IMS SIP及presence应用的RFC文档包
上传时间： 2015-09-29
上传用户：zhuoying119
jsip开发文档,对于开发SIP软电话和presence服务很有用
上传时间： 2014-01-21
上传用户：tianyi223
//芯片资料请到www.elecfans.com查找 //DS1820 C51 子程序//这里以11.0592M晶体为例，不同的晶体速度可能需要调整延时的时间//sbit DQ =P2^1;//根据实际情况定义端口 typedef unsigned char byte;typedef unsigned int word; //延时void delay(word useconds){ for(;useconds>0;useconds--);} //复位byte ow_reset(void){ byte presence; DQ = 0; //pull DQ line low delay(29); // leave it low for 480us DQ = 1; // allow line to return high delay(3); // wait for presence presence = DQ; // get presence signal delay(25); // wait for end of timeslot return(presence); // presence signal returned} // 0=presence, 1 = no part //从 1-wire 总线上读取一个字节byte read_byte(void){ byte i; byte value = 0; for (i=8;i>0;i--) { value>>=1; DQ = 0; // pull DQ low to start timeslot DQ = 1; // then return high delay(1); //for (i=0; i<3; i++); if(DQ)value|=0x80; delay(6); // wait for rest of timeslot } return(value);} //向 1-WIRE 总线上写一个字节void write_byte(char val){ byte i; for (i=8; i>0; i--) // writes byte, one bit at a time { DQ = 0; // pull DQ low to start timeslot DQ = val&0x01; delay(5); // hold value for remainder of timeslot DQ = 1; val=val/2; } delay(5);} //读取温度char Read_Temperature(void){ union{ byte c[2]; int x; }temp; ow_reset(); write_byte(0xCC); // Skip ROM write_byte(0xBE); // Read Scratch Pad temp.c[1]=read_byte(); temp.c[0]=read_byte(); ow_reset(); write_byte(0xCC); //Skip ROM write_byte(0x44); // Start Conversion return temp.x/2;}
上传时间： 2013-11-03
上传用户：hongmo
Automobiles, aircraft, marine vehicles, uninterruptiblepower supplies and telecom hardware represent areasutilizing series connected battery stacks. These stacksof individual cells may contain many units, reaching potentialsof hundreds of volts. In such systems it is oftendesirable to accurately determine each individual cell’svoltage. Obtaining this information in the presence of thehigh “common mode” voltage generated by the batterystack is more diffi cult than might be supposed.
上传时间： 2013-10-24
上传用户：kang1923
This little program shows how to use COM technology in Win32Asm. When it s run it lets the user freely decide about the presence of the program with the WS_EX_TOOLWINDOW style on the taskbar. The main goal is to show the easiest possible example instead of killing people with the details about virtual tables, polymorphism, inheritance and using nested macros etc., etc.
标签： technology program little shows
上传时间： 2015-05-03
上传用户：kernaling
KphoneSI (kpsi) is a SIP (Session Initiation Protocol) user agent for Linux, with which you can initiate VoIP (Voice over IP) connections over the Internet, send Instant Messages, subscribe your friends presence information and start other applications of your choice
标签： Initiation KphoneSI Protocol Session
上传时间： 2015-09-13
上传用户：sy_jiadeyi
一个支持众多rfc的开源sip协议栈，包括presence应用，SIMPLE。
上传时间： 2015-09-29
上传用户：llandlu
使用开源SIP协议栈编写的一个小测试程序，包括UA和UAS两部分，完成最基本的publish会话。注：简单起见，publish没有设置消息体。 PJSIP，一个用C编写，功能强大的开源SIP协议栈，采用优秀的内存分配机制编写，运行速度快，支持IM、presence、PIDF、rPIDF等最新RFC，可以用来实现各种SIP应用。 PJSIP下载见本站。
上传时间： 2013-12-20
上传用户：hoperingcong
