is to provide a cost effective SBC solution to reclaim our borders from
the big players back to the consumer, integrators, and service
providers. Recently founded in 2009, OSS capitalizes on the
collective industry experience of its founders in building SIP Border
Control applications since year 1999 to come up with a solid Session
Border Control platform.
Introducing Karoo Bridge
You may download a free 25 channel version of Karoo Bridge from our repository
We are proud of what's under the hood. See our open source SDK at github
Download the installation guide and flexi-route documentation here
Users of the free edition can post their questions to the mailing list
|Rock-Solid-SIP-Stack benefits from OSS' years of experience in developing both open-source SDK's as
well as proprietary closed source communication platforms.
A SIP stack is only as good as its parser.
OSS SIP stack is equipped with a state-of-the-art recursive ABNF parser built from
the grounds up to assure speed and accuracy in processing SIP messages.
The SIP transport benefits from the modern non-blocking-io design courtesy
of the Boost C++ library.
Fully RFC 3261 Compliant B2BUA supporting complex features such as topology hiding,
call transfer, forked calls, trombones or hairpins, event packages which are either
broken or not supported at all by other competing brands.
Upper Registration Persistence allows user agents from within the LAN as well as mobile users accessing
the network from the open Internet to seamlessly use corporate IP PBX's without the need for additional
administrative work in creating what would have been a very complex routing configuration.
Upper registration also allows calls bound to users behind a NAT or a symmetric firewall possible
by maintaining the NAT binding open without the need for user agents to refresh their registrations
at very short intervals.
Integrated Freeswitch for SIP trunking and transcoding. Freeswitch is a reliable and mature solution for SIP trunking and Karoo Bridge leverages this solution by exposing the ability to bridge calls to the the internal Freeswitch modules by calling a single API call in your Flexi-Route scripts.
Karoo Bridge does not rely on Freeswitch for any of its SBC functionality.
|Light-weight RTP Bridge supporting relay and transcoding of audio, video and T.38 UDP frames. Karoo can handle up to 5000 simultaneous RTP channels per box using a standard off-the-shelf Linux server. RTP Bridge comes in 100, 500 and 1000 channel modules and can be extended by attaching additional RTP Bridges to Karoo. As of version 1.5, Karoo also supports RTP repacketization.|
WebSocket and WebRTC Bridge support has been introduced in version 2.0. Karoo Bridge can now transcode your WeBRTC traffic towards legacy SIP servers.
Flexi-Route is the non-intrusive routing and authentication engine for Karoo.
smallest learning curve required to learn how to perform routing in Karoo. It can bridge calls from any
number of disparate domains by letting the user decide which NIC/Interface to use for a particular route.
Karoo will not impose any limitation on the way calls are routed be it IP-based, domain-based,
dial-string-based, time-of-day-based, day-of-week-based or any combination of these criteria,
an exceptionally flexible routing functionality. On top of this is a very rich API that exposes
all stages of the transaction from receipt of the request all the way to sending of the final
response where transaction behavior can be finely controlled including the ability to change SIP
headers or even inject new proprietary headers in the SIP request.
Simple-Configuration makes the creation of custom administration applications
for Karoo an easy task. All configuration are stored in text files using the familiar Linux C style
configuration syntax which makes it readily accessible to third party applications or web based
difficulty working with the Karoo configuration files.