For Service Providers


Virtualized Carrier-Grade VoIP Software from REDCOM

Call control software bridges the worlds of telecom and IT with a flexible Unified Communications platform that can be deployed in public, private, and hybrid cloud environments.


The evolution to all-IP telephony networks is shrinking the boundaries between telecommunications and IT. REDCOM Sigma® call control software bridges both worlds by providing a robust and flexible Unified Communications platform that can be deployed in public, private, and hybrid cloud environments. The software enables service providers to capture new revenue, cap and reduce the costs of legacy infrastructure, and deliver new services for an increasingly mobile and web-centric customer base.

Deployment scenarios

REDCOM Sigma can be deployed as a UC complement to existing switch networks from REDCOM and third party vendors, or as a stand-alone solution. With a comprehensive suite of Unified Communications features, Sigma is well positioned to fulfill a variety of applications including:

  • Unified Communications adjunct
  • Cap-and-Grow
  • Voice Mail services
  • Virtual PBX
  • Secure & Encrypted communications
  • International Gateway

Carrier-grade software

Anyone who has ever tried to employ a low-end software solution knows that there is no truth in “software is just software”.  With Sigma, REDCOM designed the software for serious use and reliability—hallmarks of REDCOM’s reputation. Carrier-grade elements include:

  • Trunking and alternate routing
  • Least Cost and Time of Day routing
  • Toll Restriction
  • Auto attendant
  • PBX-style SMDR and BellCore AMA
  • TLS and SRTP encryption
  • Integrated Firewall

Unified Communications drive new revenue

REDCOM Sigma offers a comprehensive set of UC functions to satisfy Business-to-Business demand:

  • IP Trunking
  • Video (P2P)
  • Chat/XMPP with Presence
  • Hosted PBX
  • Conference Bridge
  • Unified Messaging
  • Voice Mail to Email
  • Enterprise features
  • White label web interfaces

Multi-tenant hosted PBX for business

REDCOM Sigma Virtual PBX enables carriers to move away from on-premise PBXs to a robust and flexible cloud-based Software-as-a-Service (SaaS) solution. Unlike legacy TDM PBXs, REDCOM’s IP PBX is virtual, highly scalable, and cost-effective.

With REDCOM Sigma, services providers can deliver reliable, feature-rich, and mobile-enabled IP PBX services to business clients and resellers. Sigma is multi-tenant, which means it can provide services to multiple premises or clients from a single instance of the software.

  • Increase the speed of service delivery
  • Access to rich UC features to drive business
  • No upfront capital investments and no need for
    in-house telecom experience
  • Easy feature administration through a web browser
    on a PC, tablet, or smartphone
  • Standards-based and endpoint-agnostic
  • Powerful 2048-bit RSA encryption for voice, video,
    and chat
  • Conferencing tools enable collaboration from any
    end device, including landlines, smartphones, and
  • Single number service (Find Me Anywhere) allows
    users to work from any office or location
  • Presence for real-time user status
  • Custom auto-attendant to manage front desk
    operations and afterhours services
  • Automated call scheduling and day/night modes
  • Personalized voice mailboxes allow for each
    employee to manage and access their mailbox