Chicago Business Phone Services Telephone Systems Sales and Repair Experts in Chicago

GCS specializes in the installation and integration of business phone systems, telephone repair, voice & data cabling, CCTV surveillance, remote office, Avaya IP office, and other network solutions. We implement custom tailored solutions according to needs of small and mid sized busniesses. Our experts are even capable of offering contract services as per demand. We are operating in Chicagoland since 1996 and have a large client base throughout Chicago.

What We Do

Business Telephone Systems

Sales, Installation & Support.


Server Side, Computers & Office

Network Cabling

Voice, Data & Video

Security Cameras

IP, HD & Analog

Business Continuity Solution

Data Backup, Disaster Recovery Planning

Cloud Solutions

Scalable, Customizable and Cost Effective

Outsourced IT Services

Fully managed IT support with Fixed Fee

Web Designing

Design, Manage & SEO

Technical Support

Online and onsite IT support

Complete VoIP Phone System Installation Support

VOIP Phone Solutions
  • Business Phone Systems Sales and Repair
  • Office Relocation and Set Up
  • Upgrade existing Phone System
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Network & Phone Wiring
  • Voice and Data Cabling
  • Fiber Optic Cabling
  • Coax Cabling
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Outsource your IT Tasks Managed Services

Reliable, Cost-Effective and Proactive

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Secure your business Network Audit

Free, No obligation network assessment

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Certified Experts IT Support

Quick Support for your day to day business needs

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