Home Features Samples Demo Download Documentation Price Contact Us   Frequently Asked Questions How to get a 30 days FREE trial? How to develop webphone and softphone? How to develop softphone for Pocket PC? What voice codecs does it support? Echo & noise cancellation supported? Does it support multi-user conference? Does it support call recording, transfer & hold? Does it work on Windows 7 & Vista? It works on FireFox, Chrome & Safari web browsers? more Add many new and powerful softphone and webphone related features and just discover, how much better your application and webpages can be with:   IE, FIREFOX, GOOGLE CHROME, SAFARI AND OTHER WEB BROWSERS SUPPORT Webphone developed by VaxVoIP SIP SDK works with the latest versions of almost all web browsers like: Microsoft's Internet Explorer, Fire Fox, Google Chrome, Safari and other Mozilla based web browsers.   DEVELOP SOFTPHONE FOR POCKET PC & HAND-HELD DEVICES It is really easy to develop softphone for MS Windows Mobile based Pocket PCs (HTC, i-Mate, XPERIA etc.) and Hand-Held device. Please download the sample codes and SDK for more details.   SIP PROXY AUTHENTICATION VaxVoIP SIP SDK enables to register with the SIP proxy server by providing Login Id and Login password.   DIAL/RECEIVE PHONE CALLS You can dial and receive phone calls through any SIP based server, gateway or ITSP (Internet Telephony Service Provider).   MULTI-LINES SUPPORT VaxVoIP SIP SDK enables to initialize the component with a user-define specific number of lines. You will be free to start the component with 4, 8, 10, 20, 40, 80 or more number of lines. Such feature is use to start conference call, consult call transfer, dial/receive multiple phone calls and for many other purposes.   MULTI-PARTY VOICE CONFERENCE User can dial and receive multiple calls to start conference call.   LINE HOLD During the call session, user can put any line on hold.   CALL TRANSFER Transfer a call to other phone number, sip account or sip uri.   ENCRYPT SIP ACCOUNT SETTINGS If you hard-code the SIP account settings in your webpage then any user can easily view those settings by viewing the source of that webpage. To prevent such situation, VaxVoIP allows you to encrypt the hard-coded/static SIP account settings and then use them in your webpages. For more details, please see Encrypt SIP account settings in the documentation section.   ACOUSTIC ECHO CANCELLATION OR SUPPRESSION In order to eliminate the acoustic feedback an echo canceller is introduced in the VaxVoIP SIP SDK. Hands-free or Internet telephony imposes several problems. The principal one is due to the coupling between loudspeaker and microphone. The loudspeaker signal is echoed back to the microphone and transmitted back to its origin. As a result the far-end participant perceives this as an echo. Note: Acoustic Echo Cancellation (AEC) works under cetain conditions. If your hardware or environment does not fullfil any of those conditions then there is chance that AEC (Acoustic Echo Cancellation) may not work properly. Such feature is not supported by VaxVoIP SIP SDK for Windows Mobile OS (Pocket PC), use handfree to avoid echo in Pocket PC and Hand-Held devices.   NOISE CANCELLATION OR SUPPRESSION VaxVoIP SIP SDK offers advanced Noise Cancellation technology that allows significant suppression of any background noise and produce high quality of output speech. Such feature is not supported by VaxVoIP SIP SDK for Windows Mobile OS (Pocket PC).   AGC (AUTO GAIN CONTROLLER) We support AGC (auto gain controller). AGC is a mechanism by which input voice gain/volume is adjusted automatically based on input signal level. Such feature is not supported by VaxVoIP SIP SDK for Windows Mobile OS (Pocket PC).   RECORD CONVERSATION INTO WAVE (.WAV) FILE During the phone call, you will be able to record the conversation into wave (.wav) file for later play back. Such feature is not supported by VaxVoIP SIP SDK for Windows Mobile OS (Pocket PC).   PLAY WAVE (.WAV) FILE TO THE REMOTE END VaxVoIP SIP SDK export methods to play wave (.wav) file to the remote end. Such feature is not supported by VaxVoIP SIP SDK for Windows Mobile OS (Pocket PC).   FRIENDLY TO NAT AND OTHER FIREWALLS User can set SIP outbound proxy inorder to make and receive phone calls behind the NAT/firewall. In some cases, ITSP (Internet Telephony service provider) support outbound proxy. Outbound proxy is a way to let the NAT/firewall user make and receive phone calls. If the NAT/firewall router does not support SIP pass-through, you need to consult your ITSP if they support SIP outbound proxy. Since different NAT router vendor implement NAT differently. Typically ITSP may provide SIP outbound proxy to resolve NAT pass-through issues. STUN is not a good idea to support NAT pass-through, because STUN does NOT support symmetric NAT type, symmetric NAT is more secure and widely use for commercial purposes. Almost all branded routers support symmetric NAT type, even Microsoft windows SERVER 2000 & 2003 built-in NAT is also base upon symmetric NAT type. Please see STUN RFC for more details.   KEEP-ALIVE PACKETS TO NAT/FIREWALL VaxVoIP SIP SDK support keep alive feature. When you enable it, VaxSIP component starts sending keep-alive packets and keeps the port open at firewall ends.   NARROWBAND & WIDEBAND VOICE CODECS VaxVoIP SIP SDK for Windows Desktop OS supports for both narrowband and wideband codecs that's why it works with all type of Internet connections. G.729 G711 U-Law G711 A-Law iLBC GSM 6.10   VaxVoIP SIP SDK for Windows Mobile OS (Pocket PC) supported voice codecs. G711 U-Law G711 A-Law   ADAPTIVE JITTER BUFFER Jitter buffers are used to smooth delay variations in received audio by buffering the packets and adjusting their rendering. The result is a smoother delivery of audio to the user.   PACKET LOSS CONCEALMENT Packet Loss Concealment (PLC) is a technique used to mask the effects of lost or discarded packets. PLC is generally effective only for small numbers of consecutive lost packets, for example a total of 20-30 milliseconds of speech, and for low packet loss rates.   DTMF TONES GENERATION VaxVoIP SIP allows applications and webpages to generate DTMF tones.   DTMF TONES DETECTION VaxVoIP SIP SDK also support DTMF tones detection feature. Such feature is not supported by VaxVoIP SIP SDK for Windows Mobile OS (Pocket PC).   DO NOT DISTURB (DND) VaxVoIP SIP SDK support DND (Do Not Disturb) feature. Such feature is not supported by VaxVoIP SIP SDK for Windows Mobile OS (Pocket PC).   MIC & SPEAKERS VOLUME User can control Mic and Speakers volume direclty. Such feature is not supported by VaxVoIP SIP SDK for Windows Mobile OS (Pocket PC).   MICROSOFT AUTHENTICODE CERTIFICATE The VaxVoIP component is already signed by Microsoft Authenticode Certificate. So you don't need to purchase any Code Sign Certificate before using VaxVoIP activeX or VaxVoIP client-side downloadable controls.   WORKS WITH ALL KINDS OF INTERNET CONNECTIONS Due to the support of both NARROWBAND & WIDEBAND voice codecs, VaxVoIP component works with all kinds of Internet connections Dialup modems, ADSL, Cable Modems etc.   FREE PRODUCT VERSION UPGRADES After purchasing the license key, you will get the product new versions and upgrades free of charge.   Some of our customers   Supported Languages Visual Basic .NET Visual C++ .NET Visual C# .NET Visual Basic Visual C++ Borland Delphi Borland C++ JavaScript/HTML    Become a Reseller VaxVoIP offers resellership program to those companies, who are looking for business opportunity and want to become a reseller for VaxVoIP SIP SDK. If you want to become a reseller, please contact contactus@vaxvoip.com    Custom  Development VaxVoIP offers affordable software customization for our products. Whether you need simple changes or need new functionality, we offer services to meet your needs. If you are interested in custom software development, please contact customdev@vaxvoip.com.   Terms Of Use Privacy Policy   Copyright © 2010 VaxSoft. All Rights Reserved.