Toshiba Evolution & Comparison
Where does your system fit — and where should it go next?
About the Evolution & Comparison platform
The Toshiba Strata line has a long, rich history. It started in 1978 with the Strata III — one of the first 'skinny wire' electronic stored-program key systems — and evolved through the DK, CTX, CIX and IPedge generations.
If you're weighing DK424 vs. DK424i vs. CTX670, or wondering whether to keep supporting a legacy system or migrate to VoIP, we can map your options — continued support, replacement parts, or a hosted cloud migration.
Tell us what you're running and we'll help you plan the right path forward.
The Toshiba Strata timeline
- 1978
Strata III
Toshiba's first electronic stored-program key system — an early 'skinny wire' platform.
- 1989
Strata DK
Toshiba's digital key-system line; the DK56 and DK96 set the architecture, growing to the DK8–DK424i family through the 1990s.
- 2002
Strata CTX
CTX100 (replacing DK40i) and CTX670 (replacing DK424i) bring converged digital/IP telephony, 3000-series phones, and the ACD server.
- 2004
Strata CTX28
Compact CTX28 replaces the DK14; SoftIPT, SpectraLink wireless, and 2000-series IP phones join the line.
- 2005
Strata CIX
CIX200 R3.0 launches Toshiba's second-generation IP platform — peer-to-peer IP with MEGACO+ and SIP-phone compatibility, scaling to the CIX1200.
- 2011
IPedge
Toshiba's pure-IP, Linux-based Unified Communications platform (EP / EC / EM servers).
- 2017
Division dissolved
Toshiba's Telecommunication Systems Division closed — smplsolutions continues full support today.
Comparison documents
Weighing one platform against another? Start with this system comparison, then browse the full library of Toshiba manuals and bulletins.
Other Toshiba systems we support
Digital Key
Strata DK
The legacy Strata DK family — DK14, DK16, DK40, DK280 and more. Rock-solid digital key systems we've supported for decades.
Learn moreConverged Telephony
Strata CTX
Strata CTX100, CTX670 and CTX28 systems bridging digital and early IP telephony with rich feature sets.
Learn moreCommunication Integrated eXchange
Strata CIX
Strata CIX40, CIX100, CIX200, CIX670 and CIX1200 — scalable IP-ready platforms and applications.
Learn morePure IP
IPedge
Toshiba's pure-IP platform — IPedge EC, EM and EP servers, Media Application Server, and IPedge applications.
Learn moreMessaging
Voicemail
External and in-skin voicemail: Stratagy ES, Strata Messaging, MicroMAS, MAS, IVP8, iES32, iES16, LVMU and GVMU.
Learn moreNeed support for your Toshiba Evolution & Comparison?
Our certified technicians can program, troubleshoot, and supply parts — remote or onsite, nationwide.