Nortel CS2100 / SL-100 Rejuvenation

It's a fact, most enterprise IP-PBXs just can't deliver the scale and reliability of carrier-grade SL-100 or CS2100 deployments.  However, users need modern communication tools that these 10 or even 20-year-old platforms weren't designed to provide.  Telecom managers have been caught in the middle, forced to choose between richer services or reliability. Stop compromising!  Ribbon's Nortel heritage means we still have the teams that originally developed these platforms and continue to innovate.  Legacy hardware has given way to fully virtualized solutions that are far more cost-effective to operate and deliver modern UC experiences.  Web interfaces, UC soft clients, WebRTC-based embedded communications and more are part of the solution.  Of course, we offer support for legacy phones and infrastructure.  All without giving up the carrier-grade resiliency you've come to expect. 

Enjoy the peace of mind that comes with a fully supported solution and a fully committed product roadmap that extends investments for years to come.

Unified Communications Solution for Nortel CS2100 and Nortel SL100

Migrating to a Unified Communication Server

Ribbon brings contemporary unified communications capabilities like video calling, instant messaging, presence, and fixed/mobile handoff to legacy Nortel systems. Eliminate cost and complexity with a transformed IP network that consolidates and centralizes resources and simplifies operations. Avoid vendor lock-in with standard SIP-based endpoints and reduce operating expenses and improve service agility with SIP trunks.

Nortel CS2100 / Nortel SL100 Rejuvenation Advantages:

  • Consolidate, centralize, and simplify infrastructure with a transformed IP signaling core and IP Gateways
  • Avoid “rip and replace” upgrades––migrate legacy servers over time
  • Comprehensive UC feature set including video, HD VoIP, multimedia conferencing and collaboration, unified messaging, and screen sharing
  • Wide-ranging client support including smartphones, tablets, WebRTC-compliant browsers, PCs and Macs
  • Avoid vendor lock-in with SIP-based endpoints and network elements
  • Simple, per-user, licensing assures solution extensibility

Related Products

Application Server for Enterprises

Carrier-grade scale and resiliency for enterprise-wide UC

C20 for Enterprise

Seamlessly migrate CS2100 and SL-100 environments

Enterprise and Local Session Controller - JITC Certified

Secure ESC or LSC Deployments for the Department of Defense

G5 Line Access Gateway

Enables revenue growth & savings by linking TDM customers to mobile, IMS, and SIP-based services

G6 Universal Gateway

Provides the intelligent interworking of signaling, and media to access trunks

Intelligent Messaging Manager for Enterprise

Stop overpaying for antiquated voicemail

Nortel CS1000 Migration

Extend the value of CS1000 investments

WebRTC Gateway for Enterprise

A carrier-grade bridge between VoIP and web services



The Road Ahead Is Clear for Enterprises Invested in CS2100

Case Study

Department of Defense (DoD) Application Server


GENBANDCare for SL-100 CS 2100


Nortel Migration for Federal Government (JITC)


Provisioning & Portal Onboarding

Solution Brief

Nortel SL-100/CS2100 Migration

Solution Brief

SL-100/CS2100 Evolution

Solution Brief

Smart Office


JITC Session Controller


Unified Communications Solutions for CS 2100 and SL-100


CS 2100 SE 19 - New Services and Capabilities


DoD Nortel Modernization (JITC Certification)


Rejuvenating Your Legacy Nortel PBX Investment

Ask Us Anything!

Ribbon's team of professionals are ready to answer your questions, guide you to the right solution or help you with your network design.