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CST provides a wide range of network maintenance and repair services to its customers thru a process of continous improvement and customized support to cater to the varied needs of its customers. CST's industry-leading approach to network maintenance assures that your networks are functioning at their highest levels. Maintenance contracts are available at numerous service levels, each priced to maximize the return to our clients. Every maintenance contract includes CST's detailed activity reports and analysis, to assist clients in enhancing the security and productivity of their networks. These reports allow clients to view historical trends in error location and type, system down time, and numerous other criteria as selected by the client.
CST offers customized maintenance agreements for our customers. Our maintenance contracts range from Monday to Friday/ 8am to 5pm, to 24 hour/ 365 days a year and cover a wide range of Cisco technologies that include Routing/Switching, Security, Voice, Mobility and almost all of the Nortel telephony systems that include Norstar, BCM, and Meridian Options 11C thru 81C. As a maintenance provider, CST has access to wide array of Cisco and Nortel products for any of the systems at any given time of the day or night. CST also carries over half a million dollars of in house inventory to ensure our customers are covered for equipment failures twenty four hours a day, seven days a week

Three levels of standard production support and maintenance:

CST Level 1


Minimum hours of standard support/maintenance per month.


Prior Scheduling required.

CST Level 2


Next Business Day support on regular business working days.

CST Level 3


24x7x4 Support for most Cisco/Nortel products.


Specific to regions, based on time and accessibility to the location.

Customized Development/Upgrade support


Enhancements to existing systems.


Upgrades to current system.

Maintaing Support

CST’s Standard Maintenance Agreements include the following:

  • Emergency on site response within 4 hours.
  • Non-emergency on site response within 6 hours.
  • Manufacturer recommended preventive maintenance on the Phone Systems.
  • Coordination and direct communication with designated representative of your company at all times.
  • Cisco and Nortel TAC access when necessary.
  • Next Business Day response on MAC (Moves/Add/Changes) requests.
  • System engineering and consultation.
  • Factory registration and support of system.