Nationwide Service

Avaya Maintenance: Phone System Support and Services

Converged Communication Systems and the Converged Global Services Team provide leading national phone system assistance and telephone or data equipment maintenance for small-to-medium businesses or large enterprises.

For those that are current customers of Avaya or Cisco maintenance, Converged Communication systems can assist you in the management of your account to ensure that you have all necessary equipment covered and that you have a plan that is most beneficial to your business.

Converged Communication Systems provides cohesive telecommunication plans that address all of your business needs. From dial-tone to internet services, expert service and installation to post-installation maintenance and support, and industry leading telephone solutions, we will create a plan that is sure to increase your business productivity. Run your business, and CCS will take care of your Avaya or Cisco phone system support and maintenance.

Our team of experienced and certified telephony support engineers can also support Comdial, ShoreTel, Mitel, NEC, Toshiba, Nortel and other more commonly known telephone systems and will help you successfully migrate to a newer platform when your business is ready - let us help you!

Click here for information about our Cisco Maintenance.

Avaya Maintenance Support Packages

  • Partner Maintenance and Support
  • Merlin Maintenance and Support
  • IP Office Maintenance and Support
  • Definity Maintenance and Support
  • Communication Manager Maintenance and Support
  • Aura Maintenance and Support
  • IP Office Server Edition and Expansion System Maintenance and Support
  • Application Servers, Unified Messaging and Voicemail Servers, Call Recording, Call Center and Contact Center Maintenance and Support (such as CMS, Contact Store, BCMS, IPOCC, Presence Server, CCE - Contact Center Express, AES, SBC - Session Border Controller and more)

Support Footprint

Nationwide onsite and remote services available with centrally located Chicago Support Headquarters.


  • Standard onsite business 8-5 Mon-Fri
  • Business Critical 24/7
  • Weekend Support
  • Time and Materials support available
  • Remote programming assistance packages available
  • Network monitoring and diagnostic

Support Services & Service Offerings:

  • Phone System installation
  • Corporate Training (End user and administrative)
  • Pre-project planning
  • System and solution design
  • Implementation services
  • Wiring and cabling
  • First Day of Business Support
  • Data Network Assessments
  • Traffic Assessments (for trunk utilization)
  • Network implementation
  • Part replacement
  • Remote maintenance and remote support
  • Onsite support and maintenance
  • Remote monitoring
  • Next day replacement services
  • RMA and return services
  • 24/7 Business Critical response available
  • Standard business coverage
  • Post-Warranty support available
  • and more...

Please fill out our form below to receive your free quote by email. If you prefer to contact us by phone, please call us at (877)598-3999. Choosing the correct phone system for your office is vital to company performance as it is a major element to keep businesses running. Converged Communication Systems can provide the best-in-class solution and support for your company. Contact us now!

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2930 Central Street
Evanston, Illinois 60201

Phone: (877) 598-3999

Nationwide Network
Operations Center
Evanston, Illinois 60201

For our IT / Managed Services Division Visit: www.StratosphereNetworks.com

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Minnesota Location: Minneapolis, Minnesota 55435
Minnetonka, Minnesota, 55305
St. Paul, Minnesota, 55101

Wisconsin Location: Milwaukee, Wisconsin 53202

New York Location: New York, New York 10038
Manhattan, New York, 10005

Florida Location: Fort Lauderdale, Florida 33309
Miami, Florida, 33131

Los Angeles Location: Lake Forest, California 92630
Westlake Village, California, 91361

Santa Barbara Location: Santa Barbara, California 93101
Michigan Location: Grand Rapids, Michigan 49503

San Francisco Location: San Francisco, California 94105

Texas Location: Dallas, Texas 75243

Ohio Location: Columbus, Ohio 43219

Indiana Location: Indianapolis, Indiana 46240

Iowa Location: Des Moines, Iowa 50266

Missouri Location: St. Louis, Missouri 63005
Seattle Location: Seatac, Washington 98148

Detroit Location: Romulus, Michigan 48174

Illinois, Northbrook Northbrook, Illinois, 60062

Illinois, Rosemont Rosemont, Illinois, 60018

Illinois, Schaumburg Schaumburg, Illinois, 60173

Illinois, Chicago Chicago, Illinois, 60611
Chicago, Illinois, 60661

Illinois, Oak Brook Oak Brook, Illinois, 60523