For Government & Military


DISA APL Listed Military-Grade call control software

REDCOM Sigma delivers powerful capabilities highly relevant to the government and military, including VoIP, unified communications, chat, video, and conferencing.

REDCOM Sigma (Gov)

Designed to support U.S. DoD modernization strategies, REDCOM Sigma delivers a complete call control solution for government and defense, from tactical command posts to national and strategic-level communications. The software can function as a stand-alone virtualized Local Session Controller (LSC) or as an adjunct to an existing Enterprise Session Controller (ESC) to deliver advanced voice services such as transcoding and conferencing for red and black networks.

REDCOM Sigma delivers powerful capabilities highly relevant to the government and military, including a robust URI-based call routing engine with full support for the Assured Services Session Initiation Protocol (AS-SIP). The software offers a comprehensive set of UC functions, including VoIP, point-to-point video, XMPP with presence, conferencing, and unified messaging.

REDCOM Sigma has been carefully evaluated for cybersecurity (CS) and interoperability (IO) by JITC and is on the DoDIN Approved Product List.

Easy to deploy. Easy to use.

REDCOM Sigma is designed to be intuitive and seamless, making it easy for warfighters to get up to speed. With our sophisticated simplicity approach, you can rapidly learn the software and reduce the need for FSR’s and specialists. This improves the tooth-to-tail ratio (T3R) and allows the ability to implement, operate, and maintain technology with the team on-hand.

  • Intuitive user interface greatly reduces training time and ramp-up time
  • Can be deployed in public, private, and hybrid cloud environments
  • Supports all major hypervisors or bare metal installations
  • Standards-based design works with a variety of third party phones, soft clients, and gateways
  • Rapid boot time
  • Resiliency to hard shutdown
  • Extremely low SWaP

Deployment scenarios

REDCOM Sigma is scalable from small tactical teams up to strategic levels and can be deployed in a wide variety of applications:

  • Local Session Controller
    • Tactical Field Operations
    • Base Central Office
  • Hosted PBX
  • Command & Control (C2)
  • Unified Communications adjunct to existing switch networks from REDCOM and third party vendors

Military-grade software

REDCOM leveraged decades of experience to build Sigma to meet the demanding requirements of today’s government and defense users. REDCOM Sigma is designed for serious use and reliability—hallmarks of REDCOM’s reputation.

  • Trunking and alternate routing
  • Commercial Cost Avoidance
  • MLPP
  • Auto attendant
  • PBX-style SMDR and BellCore AMA
  • Configurable report generation
  • Integrated Firewall
  • DISA security templates
  • End instrument provisioning
  • SDP manipulation
  • Supports both numeric and URI-based routing

Unified communications

REDCOM Sigma offers a comprehensive set of UC functions for government applications:

  • Voice over IP (VoIP)
  • Video (P2P)
  • Chat/XMPP with Presence
  • Voice Conferencing
  • Unified Messaging
  • Voice Mail to Email
  • Full MLPP Support

Security & Encryption

REDCOM Sigma features a FIPS 140-2 validated encryption engine and is compliant with various NIAP and NSA CSFC requirements.

  • SRTP payload encryption
  • TLS encryption for call set-up
  • Mutual authentication
  • FIPS 140-2
  • Suite B
  • Certificate Revocation List
  • Online Certificate Status Protocol (OCSP)
  • Secure administration via HTTPS
  • IPSec
  • RADIUS authentication


REDCOM Sigma features a very powerful built-in reporting engine. Reports include:

  • On-demand reports
  • Scheduled reports
  • Exportable data (.pdf, .doc, etc.)
  • Resource utilization reporting
  • Precedence and preemption reporting
  • Traffic usage details

REDCOM is a Polycom US Federal/NATO Solution Advisor

REDCOM Sigma is standards-based, so it works with end instruments from just about any vendor. But if you’re looking for the complete solution, we recommend Polycom. REDCOM is authorized to resell the entire suite of Polycom VVX and Trio phones.

As of November 2018, Polycom has successfully completed JITC AS-SIP EI testing for the first time and is now fully certified with REDCOM Sigma®, which has been carefully evaluated for cybersecurity (CS) and interoperability (IO) and have been placed on the DoDIN Approved Product List and certified for use as Local Session Controllers (LSC).

Full testing was conducted with the Polycom VVX and Trio end instruments. The Polycom devices, in conjunction with REDCOM hardware and software, are all certified for AS-SIP. REDCOM Sigma is currently the only Local Session Controller that is fully certified for MLPP using Polycom VVX end instruments.