Converged Communication Systems
Avaya Support
Nortel Support
Cisco Support

Converged Communication Systems is a nationwide telecommunication and data infrastructure consulting, business phone system sales, design, installation, service and maintenance support organization. CCS provides best-in-class solutions with fully managed support options while providing standard, extended, or 24/7 maintenance programs. CCS has certified Avaya, Nortel, and Cisco professionals on staff ready to assist you. Our data support group specializes in Linux, Windows, HP, Dell, Sonicwall, Cisco, Juniper, Extreme and many other manufacturers.
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Nationwide Voice & Data Sales, Support, Maintenance (877)96-AVAYA


Friendly CCS staff ready to help and around-the-clock coverage available.

Call us now!  We value your business!  Contact our friendly staff to help with any telecommunication or IT infrastructure needs.  Avaya, Cisco, Nortel, Extreme, Juniper, Dell, HP, RedHat, Microsoft, Data Network Engineers, and all other IT and telephony needs.  Nationwide business service provider reseller and data internet services from all top companies including AT&T, Verizon, Cbeyond, XO, Paetec, and more.  CCS can analyze your telephone and internet bills and review POTS, T1, integrated t1, DID trunks, DSL, Cable, DS3, Fiber, 10M, 100M, MPLS, Tie Trunks, Centrex, Ground Start, Loop Start, Point-to-Point T1, Foreign Exchange Circuits, Ring Down Lines, SIP Trunks, VoIP Connect, Dynamic VOIP T1, wireless voice, and more.  If you have an older legacy AT&T, Lucent, Avaya or Nortel system we can help by providing fully managed programming, maintenance and part replacement services as well as map out a migration strategy to allow you to leverage future technologies without ripping out all existing technologies.  CCS partners with CIT communications and Avaya Financial Services (AFS) to provide technology financing and lease options for $1.00 buyout, $1 PO, FMV, True, Bakers Dozen, 12 month, 24 month, 36 month, 48 month and 60 month technology leasing options as well as short term rental options.  Ask about current financing promotions that include Nortel migration to Avaya and 0% offerings.  We also do full CAT3, CAT5, CAT6 and Fiber cabling.  We have both union and non-union cabling options depending on your facility needs.  If you are in need of video or security camera and point of sale solutions, ask your CCS representative to review nationwide options.  Our support team provides quarterly product trainings at CCS HQ or come join us on the webinar.  Visit which allows you to stay on top of latest CCS tech tips, articles, blogs and more on all products and services CCS offers.

Call us now at 877-962-8292.

Weekend & overnight technicians available for emergency response needs. (CCS weekend, priority, and overtime rates may apply if not covered under CCS coverage options)

Please call or email us below.
CCS Sales, Support, 24/7 Dispatch and Distribution Center:
Sales & Design Inquiries:
Support, Programming, Status and Maintenance Inquiries:
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877-962-8292 (or CCS NOC 847-424-1500)

Nationwide Product Offerings and Maintenance
Support Services

Illinois Customers Illinois
West Coast
California Customers California
East Coast
New York Customers New York
Telephone Service
PRI, T1, Dynamic, POTS
Data Internet Services
T1, Voip T1, MPLS, DS3
CCS Company Info
Converged Communication Systems
  • Converged Communication Systems, LLC - Nationwide Network Operations Center
    2930 Central Street
    Evanston, IL 60201
    or dial 877-96-AVAYA
    Local: 847-424-1500
    Fax: 847-424-1544

    East & West Coast Regional Offices:
    80 Cranberry Street Suite 9F
    Brooklyn, NY 11201

    26600 Lambert St, Suite 1004
    Lake Forest, CA 92630

    212 Anacapa St.
    Santa Barbara, CA 93101