Centrex

Service Description

Centrex service is a central office based telecommunications system owned by service providers, AT&T and CenturyLink. Centrex typically provides an individual direct dial number per user and does not require on-site common control equipment such as a key system or PBX. Centrex allows for easy unification of multiple sites in a metropolitan area by providing a common numbering plan. Centrex service provides a basic feature set and is usually delivered via analog access lines with digital lines available for larger sites. Centrex also includes access to local and long distance calling.

A DIT Voice Services Network Analyst works with each customer to determine the viability of Centrex in meeting business needs. The analyst also supports the customer through the entire process of obtaining the service, including help with ordering Centrex service through our Business Services.

Purchase and maintenance of desktop telephone instruments are the customer's responsibility. Examples of suitable phones include standard single line telephone sets, feature sets equipped with a complement of button-accessed features, multi-line key telephone sets, electronic business sets, and Integrated Services Digital Network (ISDN) phones (digital Centrex only).

SERVICE TYPE FEATURES INCLUDED CAPABILITY

Basic Subscriber

3-Way Calling Conferencing and Call Transfer*
Direct Inward Dial Number Allows calls to ring direct to user
Basic Voice Mail Basic Voice Mail Busy and Don't answer call coverage
Optional Features Call Waiting Alert tone for second incoming call
Caller ID Display of caller's phone number
(requires Caller ID equipped phone)
Call Hold Dial code to place calls on "hard" hold
Call Transfer Dial code to perform call transfer

* View Call Transfer Request and More Information About the Call Transfer Feature

Service Information

Centrex is a pass through service made available to DIT customers by way of negotiated contracts with commercial service providers. The governing contracts for these types of  services are negotiated to provide rates and terms favorable to the State. For this service, our customers should contact our Service Desk for the provisioning of the service and its ongoing support. Due to the nature of this vendor contract, we are unable to commit to Service Level Agreements, such as provisioning or resolution times.

Our rates recover the cost of provisioning and support services we provide. Please consult the “How Do We Charge” section, below, for more information regarding the service model.

Benefits

  • Centrex frees the customer from the costs and responsibilities of major equipment ownership.
  • The customer is spared the expense of having to keep up with fast-moving technology changes.

Customers

  • State Agencies
  • Local Governments
  • Community Colleges
  • K-12 Schools
  • UNC System

How Do We Charge?

View Billing Rates for This Service

Next Steps

A DIT Voice Services Network Analyst works with each customer to determine the viability of Centrex in meeting business needs. The analyst also supports the customer through the entire process of obtaining the service, including help with ordering Centrex service through our Business Services.

After service is ordered, the Centrex service providers will provide the service in accordance with a standard DIT work order. After the Centrex service is installed, the Centrex service providers will provide all maintenance and repair. Billing is handled by us on a monthly basis. Service outages or requests for repair should be referred to our Service Desk at 919-754-6000 or toll-free at 1-800-722-3946.

View Technical Details

Associated Files