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Reliable telephony hardware

Feature rich media processing resources for IP and TDM networks in a ready to deploy 1U chassis available with AC or DC dual-redundant power supplies.



  • Cost-effective high availability

    High density, dedicated hardware resources for the most demanding applications.

    Resilient, scalable architecture

    Solutions for scalability or resilience/failover.

    Suitable for a wide range of applications

    Contact centre, message broadcast, IVR, conferencing, unified communications, etc.


  • Bespoke APIs

    All variants of Prosody X 1U chassis are remotely controlled from an application server using Aculab’s remote APIs.

    High density

    Up to 1440 processing channels per chassis.

    Designed for all protocols

    IP centric design while retaining TDM connectivity.

Prosody X features

trusted by...


  • What our customers say

    Algar testimonial
    “Prosody S represents a perfect match with our strategic choice to offer software only solutions based on standards like SIP as they have lower cost and are easy to install, maintain and operate.”
    Haakon Smeby, Managing Director, Loxysoft AS
  • What our customers say

    Algar testimonial
    “ Aculab was very quick to understand our requirements and make the changes we need to get our development efforts underway. The ongoing support and consultation from Aculab was a tremendous asset.”
    David Orr, Paytel
  • What our customers say

    My Force testimonial
    “Aculab’s Prosody S solution has been a key enabler in our ability to deliver a fully virtualised software based version of our market leading DSX Integrated Communication Control Solution.”
    Dave Collins, Capita Communication and Control Solutions
  • What our customers say

    I-Tel testimonial
    “Trust in the stability of Aculab hardware products was already there and the success of implementing the Prosody S solution has only increased this confidence in Aculabs’ solutions.”
    Marc Herruer, CEO Phact


Aculab is committed to maintaining a high standard of quality and security across the board.
We ensure all of our products are of the highest standard and take responsibility for the compliance and conformity of our products.

UL mark
UKAS mark
CE mark

Techical specification

    • Fully featured to support a range of telephony solutions – IVR, call centres, fax broadcast, conferencing, VoIP and military applications
    • Extensive range of protocol stacks for both TDM and IP networks – including SIP, SS7, ISDN and CAS, via software selectable E1/T1 interfaces
    • High density – Up to 1440 telephony processing channels per chassis; add further chassis for larger systems
    • ‘Best in class’ on several performance metrics – channel count, cost effectiveness, reliability, longevity Designed to be IP-centric – whilst retaining the ability to connect to legacy TDM networks.
    • Suitable for any installation type – offering features such as automatic failover and redundancy schemes
    • Distributed architecture – multiple Prosody X systems can be controlled and coordinated remotely, distributing resources where you need them
    • Form factor – 1U chassis
    • Channel count – up to 1440 per platform
    • Protocols – SIP, SIGTRAN, SS7, CAS, ISDN PRI, DPNSS, QSIG, INS1500, NI-2, DASS2
    • Telephony resources – record, playback, fax, conferencing, CPA, IVR
    • Speech technologies – echo cancellation, barge-in to enable you to stop a replay, and silence suppression
    • 23 voice codecs including – G.711, G.723.1, G.729, G.722, AMR
    • Resilience features – high availability can be achieved by adopting automatic failover and redundancy schemes
    • Operating systems support – Windows and Linux
    • Contact centre
    • Conferencing
    • Messaging
    • IVR solutions
    • Media server
    • Voicemail
    • Auto attendant
    • SIP trunking
    • Fax bureau/server
    • PBX
    • Unified communications
    • Voice portal
    • PSAP CPE
    • Voice broadcast