Private Line: Domestic Long Haul

Adapt to Growing Business Communications Needs Reliably and Cost-Efficiently with Domestic Private Lines

An end-to-end private connection lets your company deliver growing volumes of data, video, and voice quickly and securely over greater distances.

To adapt and compete in today's fast-moving markets, you need to be able to extend the reach of your internal business communications cost-efficiently. CenturyLink Domestic Private Line Service provides exceptional reliability, accessibility, and scalability to protect your critical business traffic from uncertainty and downtime. An end-to-end private connection lets your company deliver growing volumes of data, video, and voice quickly and securely over greater distances. Advanced synchronization technologies ensure high-speed performance for all your private line traffic, from DS-0 to OC-N. Deployed over the CenturyLink network, a full range of services is available to meet all your private line needs through a single solution.


Supports Reliable Transport Service Through Secure Connections

Provides the Flexibility to Allow You to Build Network Configurations

Provides the Flexibility to Allow You to Build Network Configurations

Provides the Flexibility to Connect Multiple Signals and/or Locations (e.g. to support point-to-multipoint applications) Through Multiplexing (muxing)

Delivers High Performance—SLA Includes Circuit Availability Objective of 99.999% End-to-End

Minimizes Delay to Accommodate Even the Most Delay-Sensitive Applications

Improves Cost Efficiency by Allowing You to Combine Multiple Incongruent Services (data, IP, ATM, voice, video, etc.) over One Line with a Single Channelized Interface, and Aggregate Slower Speed Services onto High-Bandwidth Trunks

Strengthens Security and Helps Protect the Confidentiality of Your Information Through a Telecommunications Facility Dedicated for Your Use

Aids Disaster Recovery Planning and Continuity of Operations Through Enhanced Diversity Routing

Ensures Reliability Through Four-Fiber, Bidirectional Line-Switched Ring (BLSR) Technology, the Gold Standard in Synchronous Optical Networking (SONET); Circuits are Switched Automatically from the Working Side to the Protect Side of the Ring Within 50 ms


Robust Service Level Agreements (SLAs) for 99.999% Network Availability

Support for Voice, Video, and Internet

Four-Fiber, Bidirectional Line-Switched Ring (BLSR) Technology

Network Monitoring and Management to Achieve High Levels of Performance

Multiplexing (muxing) Available at DS-1, DS-3, and OC-N Circuit Levels Based on Customer-Selected Options and Restrictions

Domestic Network Diversity® Service Enhancement (on request and subject to availability) for Point-to-Point Transmission Between Two CenturyLink Points of Presence (POPs) as a Distinct Circuit from Your Primary On-Net Circuit. Diversity Service is Available as Follows:

- POP Diversity
- Ring Diversity
- Route Diversity

How It Works

CenturyLink™ Domestic Private Line Service provides a fixed capacity of bandwidth for transport of your digital communications traffic, utilizing and conforming to SONET standards that originate and terminate a physical connection at a CenturyLink-specified demarcation point located in the CenturyLink POP. The service extends to and includes the equipment maintained by CenturyLink that is necessary to connect the service to the customer's interconnection facilities at the CenturyLink-specified network interface points. Interconnection, collocation, and/or local access services are not included as part of the Domestic Private Line service, but may be ordered in conjunction, either through CenturyLink or other telecommunications providers. Digital Private Line service is available at DS-0 (64 Kbps), fractional DS-1 (128 Kbps and up), DS-1 (1.544 Mbps), DS-3 (45 Mbps), and OC-N (155 Mbps and up). Digital Private Line services utilize digital local loops that provide nearly 100 percent end-to-end network availability. CenturyLink DS-1 service can also be configured as clear channel or channelized, and is compatible with virtually all DS-1 systems in use today.

Network Maps

The CenturyLink network covers the entire continental United States and has one of the largest fiber footprints. Internationally, we provide coverage to hundreds of destinations.

More Services and Solutions for You

Metro Private Line

The bandwidth you need for even the most demanding data, voice, video, and imaging applications.

Ethernet Private Line

Improve the Cost Efficiency of Your Network without Sacrificing Performance

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