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SIP SDK provides tools and components to quickly add SIP (Session
Initiation Protocol) based dial and receive phone calls feature in
your web pages and software applications. It accelerates the
development of SIP based soft phone with your own GUI (graphical user
interface) and brand name. SIP SDK includes SIP activeX , SIP OCX ,
SIP DLL , SIP Lib and SIP Cab, so you can use the one you like the
most. It is really easy to incorporate SIP SDK in your web pages and/
or applications. Sample source codes are available to download. It
delivers superior voice quality by integrating advanced digital voice
processing features including acoustic echo cancellation, noise
cancellation and adaptive jitter buffering. For more details, please
visit the features link.

Multiple lines explicit selection!
Dynamically loadable codecs
SIP Proxy authentication
Multi-party voice conference
Registrar support
Play wav files into conversation
Record conversation into file
Hold/Retrieve call
Forward Call (Blind Call Transfer)
Transfer Call (Attended Transfer)
Mute Sound
VPN support
Authorization Id
Noise reduction
Auto gain
Jitter buffer parameters
Samples on Delphi, C#, VB, VB.NET, C++ 2005, C++ 6.0, HTML (SIP
Windowless samples on C++ and .NET
Adaptive silence detection
Adaptive jitter buffer
STUN support
Comes as ActiveX control and as DLL only version
.Net COM wrapper version
Retrieving external IP addres from STUN server
IM interface
Codec disabling
Playback of different formats of WAV files
Software volume control
Caller-id and user-agent customization
SDP updates
Fax support
AuthID handling
IPv4/v6 support
Additional DNS servers
Manual network interface selection
Friendly to NAT and other firewalls
Narrowband, wideband voice codecs
Packet Loss Concealment
Network interface selection
Bluetooth implementation
Callcenter manager listening usecase implemented
Additional independent full featured RTP SDK
Royalty free licensing
No Yearly/Monthly fee
Free product updates/bug fixes/hot patches

Available codecs:
G.726 (16k 24k 32k 40k)
Speex (Narrow, Wide)

If you have any questions regarding the product, purchasing, licenses
etc, please don't hesitate to contact us at

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