CCS/SS7

Overview

The Common Channel Signaling/Signaling System 7 (CCS/SS7) interconnection service from CenturyLink allows you to use the CenturyLink CCS/SS7 network for setup and take down of telephone calls to and from the CenturyLink Local network, and for retrieving information from CenturyLink databases. It is also used to transmit information and instructions necessary for Custom Local Area Signaling Services (CLASS) such as Automatic Callback.

CenturyLink offers CCS/SS7 interconnection service to all carriers: Interexchange Carrier (IXC), Competitive Local Exchange Carrier (CLEC), Commercial Mobile Radio Services (CMRS), Incumbent Local Exchange Carrier (ILEC), and CCS/SS7 Service Providers. Interconnection is available where CenturyLink has Signal Transfer Points (STP). CenturyLink Intelligent Network Operations (INO) Center provides support and network monitoring 24 hours a day, 7 days a week.

With CenturyLink CCS/SS7 interconnection service, you may:

• Enhance your end-user customers' perception of your service by offering CLASS features and other services.
• Rely on CenturyLink to provide support and network monitoring.

Features & Benefits

• Allows you to set up calls that terminate at CenturyLink end offices - enhances the service offered to your end-user customers.
• Supports access to CenturyLink database services [Line Information Database (LIDB), Calling Name (CNAM), and Toll Free Code (TFC)] - also enhances the service offered to your end-user customers.
• Supports certain Custom Local Area Signaling Services (CLASS) feature signaling - provides your end-user customers with the ability to transmit information and instructions necessary for certain CLASS features.

Product Details

The CenturyLink Common Channel Signaling/Signaling System 7 (CCS/SS7) Interconnection Service allows interconnecting service providers to use the CenturyLink CCS/SS7 network to establish transmission paths for telephone calls and obtain information from remote databases (LIDB, CNAM and Toll Free Code). It is also used to transmit information necessary to provide Custom Local Area Signaling Services (CLASS) such as automatic callback.

The service is available to all service providers (IXC, CLEC, CMRS, ILEC, and CCS/SS7 Service Providers) where CenturyLink has Signal Transfer Points (STPs). STPs are located in Florida, New Jersey, North Carolina, Nevada, Ohio, Tennessee, Minnesota, Pennsylvania, Texas and Missouri.

CenturyLink transmits out-of-band signaling information between its CCS/SS7 network and the CCS/SS7 networks of other service providers. CCS/SS7 networks are separate from, but interconnected with, telecommunications networks used to carry voice and data communications between end-user customers. CCS/SS7 networks have two basic components:

1. Signaling links - The digital circuits (usually 56 Kbps) used to transport messages between signaling points.
2. Signaling points - Nodes in the CCS/SS7 network that originate, terminate and route signaling messages, or perform a combination of these functions.

Business Applications

The CenturyLink Common Channel Signaling/Signaling System 7 (CCS/SS7) interconnection service allows you to use the CenturyLink CCS/SS7 signaling network for setup and take-down of calls to and from the CenturyLink network. It also allows you to establish transmission paths to obtain certain information from remote databases (LIDB, CNAM, Toll Free Code) and to transmit the information and instructions needed to provide certain Custom Local Area Signaling Services (CLASS).

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