Centrex:

Qwest's retail telecommunication service, Centrex 21, is available for resale by Competitive Local Exchange Carriers (CLECs) to their end-users.

Centrex 21 is a flat rate, business service for customers with 2 to 50 station lines per location. It consists of standard features that are available to all station lines in the shared customer group where available. A Centrex 21 end-user has a choice of having the features delivered via analog lines and/or 2B+S, (digital, voice only) Integrated Services Digital Network (ISDN) lines.

Centrex 21 can be integrated into existing telephone lines, either voice or data, utilizing a choice of different standard and optional features, maximizing productivity. However, the end-users pay for the feature packages regardless of full or partial activation of the features.

Standard Packages, Rate Stability Plans and Optional Features may vary from state to state.Touchtone features are inherent with Centrex 21 and are automatically programmed within the station line.