Web Based Telephone System (Using SIP server and Jsp servlet)

Now i have more learning about Jsp and Servlet...All senior in Java.May i know how to build a system with Jsp n do the voice calling?

i have do same thing with you..may i know what server r you using?

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regards
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E72: Web-based apps try using connection other tha...

I bought my wife an E72 yeasterday. After we charged the battery up and turned it on, everything seemed to work alright. I set up the WLAN connection on my wireless at home, and I tested the use of Facebook, MySpace, etc. Her SIM card needs to be topped up, so the phone keeps saying "SIM Registration Failed." We're going to top it up this morning, so no worries about that. This morning she tried using the Facebook app, but instead of conecting via WLAN, it says "Connecting via IDEAS" which is the Singtel SIM card here in Singapore. I've manually connected to my Wifi network here, and even went to the connection manager to set the priority to 1. The app still doesn't connect via WLAN, and instead tries to use the SIM. When she does top up her card, this could be a quick money waster, especially when we have an abundance of Wifi connectivity....so how do I get the web-based apps to use WLAN over anything else?
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Hadimassa, thank you for pointing me in the right direction! I was able to do this for the Facebook app, and now it works without any problems. Can something similar be done for the Ovi store, or other services, like downloading languages for the dictionary app? Both of these options attempt to use the Singtel IDEAS method to connect, but because it's a prepaid phone, it's not possible. Any way to make them use the Wifi, or can this not be done over this type of connection?
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http://europe.nokia.com/support/product-support/e72/guides
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Edited by: BobXu on Nov 17, 2008 2:27 PM
Edited by: BobXu on Nov 17, 2008 2:32 PM

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Dear Nokia user
In Nokia N85 setting there is an option foe SIP setting.I want to know how can I use this option to register in a SIP proxy server and have an VOIP converstion over internet by my N85
small_nokia_supporter

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thank you for your reply.I went to the link you had given in your reply to download SIP Voip 3x setting but I were asked to relog and after I entered my username and password . I saw this bloking message" The credentialsyou provided can not be determined to be authentic".
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Temperature control system using thermocouples and cooling fans

Greetings labview community,
I'm fairly new to the labview program and though I have watched the tutorial videos and tried to search these forums I couldn't find a solution to my problem.
I need to write a program in labview that controls the temperature via use of fans inside a case with heatsinks and various electronic parts.
In particular I want to use two thermocouples, in order to measure the temperature of two transistors (one in each side of the case), where heatsinks are placed on top of them.
When the temperature is above 25 degrees, a fan should activate. The fans speed should be faster, the longer the temperature stays above 25 degrees, until it drops down to 25 degrees.
How can this be done? I thought of using a "mask and limit testing" for activating it, but I can't figure out how to control the speed of the fan in a loop automatically based on the temperature.
Here are some of my specifications:
USB-6009 (this was provided to me and is therefore my only option)
Labview 2011
NIDAQmx 9.5 driver
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2 fans 0-5V
Below you'll see an attachment of the program I've wrote so far (just for one set of thermocouple-fan) and I'm using a slider to simulate the input from the thermocouple. If there is anymore information needed, tell me.
Thank you very much.
Attachments:
Temperature sensors and fan activation.vi ‏130 KB

Hi Lomedil
What you have is a general control problem. This statement:
"The fans speed should be faster, the longer the temperature stays above 25 degrees, until it drops down to 25 degrees. "
Is an indication that you at least need a PI-controller, or you could use a PID-controller. The I in PID stands for integral and that means that the longer you have the same value different from your reference the larger the control signal will be and thereby the faster the fan will spin.
I would recommend you to have a look at the following article to learn the basic principles of control theory:
PID Control
http://zone.ni.com/devzone/cda/tut/p/id/6440
To find the coefficients in your design you can either choose to make a mathematical approximation of your test setup and then calculate the three constants Kd, Ki, Kp using this model, or you can choose to estimate the parameters on a "trial-and-error" basis until you have the desired response time / overshoot i.e.
In general you should note that designing a control application on a General Purpose O/S as Windows will not give you deterministic timing, thus your control loop can be more unstable than expected, design your controller with this in mind! For the fan operation it should not be a problem but for more advanced control purposes your would always use a Real-Time system like the singleboardRIO, compactRIO or setting up a standard PC as a LabVIEW Real-Time Target (Converting a Desktop PC to a LabVIEW Real-Time Target - http://zone.ni.com/devzone/cda/tut/p/id/2733)
Best Regards
Anders Rohde
Applications Engineer
National Instruments Denmark

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