C# Sip Softphone

William Cats

Hi guys, i've been tasked with developing SIP softphone for a client and was wondering if any of you guys know a decent (with proper support and documentation) SDK for C#? Am willing to purchase if needs be.

Thanks

9 Replies

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Vladan Kostic7y ago
Hi, maybe this SIP .NET Core API can help you.
It is Session Initiation Protocol API for .NET Framework / .NET Core.
Link is http://www.independentsoft.de/sip/index.html
Madison Bailey12y ago
Hi,

I've found a great guide in this topic that really helped me: http://www.codeproject.com/Articles/170415/How-to-Build-a-NET-Softphone-in-C-with-SIP-SDP-RTP It explains step-by-step how to build a .NET softphone in C#. On the basis of this article it was really easy for me to create a SIP softphone. It's worth to take a look at this guide.

Otherwise, in this article Ozeki VOIP SIP SDK has been used as an SDK for C# development. In my opinion it's an easy-to-use, realiable software, so I can recommend you that. (Actually, I've never tried any other SDK for C# but it has worked for me.) At the developer's website you can find a huge online documentation including detailed written guides, video tutorials and example projects: http://voip-sip-sdk.com/p_333-voip-sdk-softphone-development-voip.html

Good luck guys,
Mad
danish jafry14y ago
Use SipekSDK, its totally free and easy to use.
here is link.
code.google.com/p/sipeksdk/
Ramya Ragu14y ago
let me know if u got result
Ian Ecle14y ago
hello,

At the first phase of my project I also use a free softphone, because it was only for testing how effective it is. As it turned to be very effective, I decided to implement a more complext softphone for complex text, voice and video phoning to my customers. There are many softphones on the market. Since I increase the capacity, finally, I bought a softphone license, as free softphones were not so reliable as they should be in production. My deciding factors were the support and reliability with high capacity.

Finally, I chose the Ozeki VoIP SIP SDK that is quite flexible enough to develop a Silverlight softphone (and I also created an autodialer with it). The support team is very responsive and helped me a lot, the right support was critical for me. That is why I purchased this product instead of the others after testing.

Sample source: http://www.voip-sip-sdk.com/p_84-silverlight-sip-softphone-voip.html

I hope, my experiences help others...

BR
Willmosh Tell15y ago
Hi!

We are in the same shoes. I have found a working silverlight softphone at http://www.ozekiphone.com. So I know it can be done. These guys also sell a C# SDK at http://www.voip-sip-sdk.com. The problem is that it is a bit expensive. This is how far I got at the moment.

Villmos

dan rogy16y ago

My project required to integrate dialer
with voice playing ability, fax detection and digit recognition



I bought
http://voipcore.com



and that guys provide great support

Chaitanya Reddy Vonaja16y ago
Have You got the Solution? ARe u using any API?Let me Know if u got solution.

Thank You
Keith Kabza17y ago
You could use UCCA Api. I dont think you realize the scope of this project. There are numerous Softphone applications you can purchase and use for free Xlite for instance.

You have to have write code to handle the network layer and the you need to follow SIP protocol specfications listed in the RFC.

UCCA is generally used to build application for Office Communication Server using SIP