Skip to main content

Lilee Systems and Alstom Debut New Communication System for Positive Train Control

Main Press Contacts (Alstom Headquarters)

Christopher English

Send an email

Tel: + 33 1 57 06 36 90

Samuel Miller

Send an email

Tel: + 33 1 57 06 67 74

Visit our media section and follow the "Press contacts" link to find local press contacts at country level


Indianapolis, IN – September 30, 2013 – Today, at the opening of the 53rd Annual RSSI Communications and Signaling Exhibition, Lilee Systems and Alstom announced that their new, jointly developed communications management technology will become the backbone of Alstom’s positive train control (PTC) system. Once in place, the CMU-2000 family of communications manager units (CMUs) will enhance the safety and performance of passenger rail service by enabling fast, reliable transmission of PTC data signals and commands.

The CMUs consist of a Mobile Communications Manager (MCM) installed onboard locomotives, Base Radio Communications Manager (BRCM) and Base Communications Manager (BCM) equipment located along the wayside, and an Office Communications Manager (OCM) at network control centers or remote offices. Together, these units relay information from PTC-equipped trains back to central operations centers and allow system operators to enforce speed limits and signals across the rail network in the northeastern U.S. The CMU-2000 family is fully compliant with Advanced Civil Speed Enforcement System (ACSES) communications protocols, including ATCS specifications 200 and 250.

These new communication manager units were specifically designed to operate seamlessly with Alstom’s ACSES PTC system, which is currently operating along the Northeast Corridor,” according to Steve Zwart, Director of Alstom’s PTC operations. “Their underlying technology is based on more than a decade of successful PTC implementation and can meet the needs of any operator.

Meeting the need for reliable communications along the Northeast Corridor PTC network carries forward the momentum of our partnership with Alstom while demonstrating our commitment to deliver advanced technology tailored to address customers’ PTC challenges,” added Jia-Ru Li, CEO of Lilee Systems. “Together with Alstom, we have launched a robust line of products that provide interoperability for use on the country’s busiest rail corridor while leaving plenty of room for future enhancement.

The partnership between Alstom and Lilee Systems, first announced in April of 2013, was initially formed to address the need for Interoperable Train Control (ITC) system management among end users of vital wayside products.  With the addition of the first fully interoperable family of ACSES communications management products, Alstom and Lilee Systems are pioneering the next generation of passenger rail communications and control technology.


About Lilee Systems

Founded by leaders in the wireless industry and headquartered in California's Silicon Valley, Lilee Systems is the leading vendor of wired and wireless IP-networked communications products and solutions focused exclusively on the railroad and rail transit industry. Team members have extensive backgrounds in IP routing and switching, standardized LMR communications, and have been voting members of the IEEE 802.11 Wi-Fi, 802.15 WPAN, and 802.16 WiMAX working groups for many years. The companys extensive experience in Software-Defined Radio (SDR) technology makes Lilee unique in the industry. By leveraging its core competencies in radio frequency (RF) systems and networking, Lilee Systems has developed the TransAir family, including the PTC-3000 series 220 MHz Radio Transceiver, the WMS-2000 Wayside Messaging Server, the LMC-5000 series Mobility Controller, and Communications Manager units to offer a complete end-to-end interoperable IP-based communications network. For more information, please visit

About Alstom

A promoter of sustainable mobility, Alstom Transport develops and markets the most complete range of systems, equipment and services in the railway sector. Alstom Transport manages entire transport systems, including rolling stock, signaling and infrastructure, and offers turnkey solutions. Alstom Transport recorded sales of 5.5 billion euros in the fiscal year 2012-2013. Alstom Transport is present in over 60 countries and employs near 26,700 people.

Press Contacts

Adam Pratt (Alstom)
Tel.: +1 202 351 9322

Tami Kurth (Lilee Systems)
Tel.: +1 408 212 5524

Denise Nelson (for Lilee Systems)
Tel.: +1 925 837 6277