# DZS

> DZS Inc. was a Plano-based supplier of fiber-access equipment, optical transport, connected-premises devices and network software for communications providers and enterprises. DZS and two U.S. subsidiaries filed for Chapter 7 and ceased substantially all operations on March 14, 2025. A new Zhone Technologies acquired substantially all of their assets on May 1, 2025; the CloudCheck, Expresse and TruSpeed software portfolio had already been sold to AXON Networks in October 2024.

- **Founded:** 1999
- **Headquarters:** Plano, United States
- **Founders:** Mory (Morteza) Ejabat (Co-founder and original CEO of predecessor Zhone Technologies), Jeanette Symons (Co-founder and original CTO of predecessor Zhone Technologies), Robert Dahl (Co-founder of predecessor Zhone Technologies)
- **Products:** Velocity, Saber, Helix, Xtreme, CloudCheck, Expresse and TruSpeed
- **Notable:** Successfully completed initial live Velocity pilot phases in Orange Polska’s production network in 2023., DZS and TalkTalk won the 2023 Light Reading Leading Lights award for Outstanding Use Case: Home Network Intelligence., CloudCheck won the 2022 Leading Lights customer-experience use-case award for Liberty Latin America’s WiFi360 offering.

## Products & services

- **Velocity** — Optical line terminal systems for fiber broadband access, including GPON, XGS-PON and point-to-point deployments; included in the 2025 Zhone asset acquisition.
- **Saber** — Compact optical DWDM transport and ROADM systems for edge and metro networks; included in the 2025 Zhone acquisition.
- **Helix** — Optical network terminals, residential and business gateways, and access points; included in the 2025 Zhone acquisition.
- **Xtreme** — Cloud management, automation and orchestration software; included in the 2025 Zhone acquisition.
- **CloudCheck, Expresse and TruSpeed** — Historical Wi-Fi management, service assurance and speed-testing portfolio. Sold to AXON Networks in October 2024; not part of the later Zhone acquisition.
- **NetComm connectivity portfolio** — Fiber extension, fixed wireless access and connected-premises products added through the June 2024 acquisition. Enterprise IoT business separately sold to Lantronix in December 2024.
- **Professional and support services** — Network design, deployment, training, technical support and managed software delivery complemented equipment and software sales.

## Achievements

- Successfully completed initial live Velocity pilot phases in Orange Polska’s production network in 2023.
- DZS and TalkTalk won the 2023 Light Reading Leading Lights award for Outstanding Use Case: Home Network Intelligence.
- CloudCheck won the 2022 Leading Lights customer-experience use-case award for Liberty Latin America’s WiFi360 offering.

## Latest updates

- **2026-10** — Successor update, not DZS: Zhone announced completion of its acquisition of Tellabs Access on October 1.
- **2026-06** — Successor update: Zhone announced Vianet’s Saber deployment, completed in 2025, upgrading specified Northern Ontario routes from multiple 10G to multiple 100G channels.
- **2026-05** — Successor update: Zhone launched SABER-6400 and an updated Xtreme network-management platform.
- **2025-05** — New Zhone Technologies closed the acquisition of substantially all DZS, DZS Services and DZS California assets on May 1; announced May 5.
- **2025-03** — DZS and two U.S. subsidiaries filed Chapter 7 and ceased substantially all operations on March 14.

## Links

- Website: https://www.dzsi.com
- LinkedIn: https://www.linkedin.com/company/dzsi/
- Twitter/X: https://twitter.com/dzs_innovation
- Facebook: https://facebook.com/dzsinnovation/

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Profile page: https://yespress.io/dzs
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Last updated: 2026-10-17