Please go to RTP SDK page to download the latest version of solution, which works in Windows 8.

ABTO Software and VoIP SIP SDK department congratulate our current and future clients with Easter.

We released new version of VoIP SIP SDK for Windows. Recent changes list:

01/02/2013
241. Added code that reset RTP stream settings in decode when received packet with MARK.

05/02/2013
242. Improved video rendering.

25/02/2013
243. Added ability to reset RTP SSRC when received Marker packet.

06/03/2013
244. Fixed possible issue when remote side changes RTP SeqNumber.

07/03/2013
245. Fixed bug with playing local dial tones.

26/03/2013
246. Fixed bugs with sound send/receive after handling attended transfer.

Please proceed to download the latest version.

ABTO Software is proud to announce release of IVR VoIP SIP SDK – customizable interactive voice response software solution on the basis of winning ABTO Software’s VoIP SIP SDK.

IVR VoIP SIP SDK supports multiple lines and all features of VoIP SIP SDK.

To download demo version please proceed to the product page.

We released new version 4.6 of VoIP SIP SDK. Recent changes list:
234. Added new functionality to prevent lost DTMF:
a. Default payload type for DTMF codec is set to 101, instead of 99.
b. Added code that checks is used same payload type for send-receive DTMF.
If not – add one more decoder for dtmfPayloadType received from remote side.

235. Default video frames sample rate set to 15fps, instead of 25.

236. Fixed option LocalTonesEnabled.
Now when it’s set to 0 – SDK will not play tones/files/noise/buffer on local side.

237. Modified method SetConnectionContributionRelated/SetConnectionContributionRelatedLocal.
Now it applies only OutputGain.

238. MlSampleWindowCPP -
a. Added [FullScreen video] feature.
b. Added [Video call enabled] option in Settings form.

239. Improved video rendering time. Fixed possible crash on resize video form.
240. Modified setup script – now default application is MlSampleWindowCpp.
To download the latest version please contact us or use the download form on the website.

ABTO Software is proud to announce that we have softphone sample with video support published on App Store:

https://itunes.apple.com/us/app/abtovoipclient/id527208668

Please enjoy it and get back to us when you decide to purchase our VoIP SIP SDK for iPhone.

We have new flash softphone demo that supports full screen mode in good quality. If you are interested please request a demo.

We added a new section on our website – Subproducts. You are welcome to visit new pages and evaluate our custom solutions.

We released new version of VoIP SIP SDK. Recent changes list:

07/12/2012

Added new method
IAbtoPhone::StartSendingNoise(LONG Tone1AmpPromille, LONG Tone2AmpPromille, LONG IntervalMs, LONG FrequencyHz)

Modified handling early media in cases when remote side generates different values for field ‘Tag’ in header ‘To’

24/12/2012
Added new method IAbtoPhone::HasSIPBodyVideoMedia
Returns true when SDP section of INVITE/OK SIP header contains ‘m=video’ media
Fixed possible crash when applied new settings with/without VideoDevice

11/01/2013
Fixed timestamp outgoing RTP packets from H264 codec
Modified StartSendingNoise method, allowed change noise settings multiple times

14/01/2013
Added new functionality to prevent lost DTMF
a. Default payload type for DTMF codec is set to 101, instead of 99
b. Added code that checks is used same payload type for send-receive dtmf
If not – add one more decoder for dtmfPayloadType received from remote side
Default video frames sample rate set to 15fps, instead of 25

Please download the latest version.

Attention: www. voip-sip-sdk. com is not our website.

Some customers ask us whether www voip-sip-sdk com is our website. The answer is no. After long time that we have used www.voipsipsdk.com, other company made the mentioned website, but it has nothing to do with us. So if you search for our products, please make no mistake.