Reliable telephony software
Prosody S provides telephony resources for platforms such as contact centres, IP-PBXs, media servers, fax servers and conferencing products. With its extensive range of voice codecs and a cost-efficient per-channel pricing model, Prosody S is ideal for a wide range of communications applications.
Benefits
Cost effective for any system size
Licensed on a per channel basis.
Comprehensive telephony resources
Vast array of API commands; support for multiple voice and fax standards added over a decade of constant development.
Suitable for a wide range of applications
Contact centre, message broadcast, IVR, conferencing, unified communications, etc.
Features
Bespoke APIs
A customer application using Prosody S makes, receives and interacts with calls using the Aculab Call Control API, enabling telephony within business.
Ready to deploy
Prosody S is a fully featured product comprising high and low-level telephony resources, fax, conferencing and transcoding.
Distributed architecture
Licensed on a per channel basis and a distributed architecture allowing separation of application and media servers.

What our customers say
Techical Specification
- Fully-featured product – low level and high level telephony resources, extensive fax features, conferencing and transcoding
- Extensive portfolio of voice codecs – narrow band and wideband codecs available to suit a broad range of applications
- Per-channel licensing model – means a lower cost of ownership and greater deployment flexibility
- Scalable from 1 to 1000’s of channels per system –means applications can be expanded or scaled to suit any end-user channel count requirement
- Can be deployed on any platform or form factor – you can choose the server best suited to your application, deployment environment, target market and price point
- Distributed architecture – allows separation of application and media servers and provides the capability to create large multi-server systems
- VM support – enabling deployments on virtualised server environments for hosted or cloud models
- Channel count – from 1 to 1000s of channels per host CPU
- Telephony resources – record, playback, fax, conferencing, CPA, IVR
- Speech technologies – echo cancellation, barge-in to enable you to stop a replay, and silence suppression
- Operating systems – runs on Windows or Linux, any platform/form factor (1U server, processor blade, general purpose PC)
- Voice codecs – G.711, G.723.1, G.726, G.728, G.729A, G.729B, G.729AB, iLBC, GSM-FR, GSM-EFR, MS-GSM, AMR-NB, EVRC, SPEEX
- HD voice codecs – G.722, G.722.1, G.722.2 (AMR-WB), Skype SiLK
- Extensive fax support – including T.38 at up to V.34 speed and G.711 fax pass-through
- Transcoding – any-to-any voice codec, full-duplex channels, rate matching, narrowband/wideband conversion (up/down sampling)
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Documentation
Walkthrough guides, application and deployment notes, datasheets, case studies and white papers.
Datasheets
Deployment Notes

Case studies
Discover how we have helped our clients, and how you too can benefit from Aculab Cloud.

Technical documentation
Find out about the installation guide and other technical documentation here.
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