DTMF IVR SYSTEM IN VB.NET

- Version 9.7.0

Ozeki VoIP SIP .NET SDK allows to develop a DTMF
navigated IVR system written in VB.NET. In this sample
program an IVR tree is built up from .xml file and SIP
communication is supported by Ozeki SIP SDK. The
extended codec support (G.729 and further codecs)
assures excellent sound quality. The SDK makes it
possible to build IP based telephone solutions like
softphones, webphones, VoIP client software, etc. This
IVR system registers a softphone to a PBX with a SIP
account that is defined in an application configuration
file. This file is a standard tool that can be used for
configuration purposes. The IVR tree navigation is made
by receiving DTMF signals. This means that the call
needs to be subscribed for the DtmfReceived event and a
specified event handler needs to be written. The IVR
tree information is read up using text to speech
conversion. Ozeki VoIP SIP .NET SDK is a versatile tool
that can be used to build: Softphone, SIP client
applications, VoIP client applications like Dialers,
Call assistant, Call center clients, Call center
servers, PBX systems, IVR systems, Webphone solutions,
Conferencing systems, Voice recording systems, VoIP
tunneling systems, Security monitoring systems, Mobile
communication systems. Tools: SIP protocol
implementation, RTP implementation, RTCP
implementation, Audio device support (mic, speaker),
Audio encoding / decoding (audio codecs), Tools for
voice quality improvement (AEC, AVG, NR, Jitter
buffer), Support of video devices (camera and
playback), Video encoding / decoding (video codecs),
Implemented network communication protocols: UDP, TCP,
Implemented firewall passthrough (STUN, TURN),
Implemented file formats (mp3, wav, avi). Capacity:
multiple phone lines and calls are available. Ozeki
VoIP SIP SDK offers high rate compatibility with
numerous PBX systems like Cisco Unified CM, Asterisk,
3CX, etc., and it also works with almost all VoIP
service providers like Skype Connect, Callcentric,
SureVoIP, etc. Royalty free licensing