Local Number Portability Query Service utilizes the Common Channel Signaling Network (CCSN) to query a Local Number Portability (LNP) database to secure network routing instructions before the completion of a call. At a minimum, the LNP database contains Location Routing Number (LRN) information about an end-user's choice of Local Service Provider (LSP). The LRN is unique to the LSPs serving switch that will complete the call.
LNP is defined as, "the ability of users of telecommunications services to retain, at the same location, existing Telephone Numbers (TNs) without impairment of quality, reliability, or convenience when switching from one telecommunication carrier to another." For additional information, view Local Number Portability (LNP).
When more than one network is involved in completing a call, the network prior to the termination (i.e. N-1 Network) is responsible for querying a LNP database to secure the appropriate LRN to route the call. There are three features of Local Number Portability Query Service:
When the provider of the N-1 network forwards a non-queried call to a Qwest end office switch and the TN is a ported number, Qwest's switch will suspend the call processing and launch a query to Qwest's LNP database. The LNP database will secure the LRN of the ported number. Once the LRN is returned from the LNP database to the Qwest switch originating the query, call processing is resumed. The call is either processed in Qwest's network, or routed to the appropriate LSP network to complete the call. Qwest will bill the N-1 LSP a Local Number Portability Query Service Default End Office query charge.
When Qwest's tandem is the first point of switching for terminating a non queried call to an NXX Code with one or more ported numbers, the following will take place:
When you wish to fulfill your querying responsibility yourself, and are Signaling System 7 (SS7) capable, but don't wish to invest in your own LNP database, you may interconnect with Qwest's SS7 network at the Local Signal Transfer Point (LSTP), and launch queries to Qwest's LNP databases. Qwest will bill you the query charge.
For detailed information regarding the FCC decision to adopt the LRN architecture, view the FCC 1st Report and Order 96-286.
Design requirements are specified in Technical Publication Qwest Common Channel Signaling (CCS) Network Interface Specification - 77342.
The rate elements associated with this service are Database per Query rates. Direct Database Query Services will also include Optional Activation Charges. The current pricing, including non-recurring ordering charges for product Local Number Portability Query Service can be found in FCC Tariff # 1.
Qwest Local Number Portability Query Service rates are as follows:
NOTE: *Tandem level and End Office level rates are filed in Section 13 of the FCC 1 Access Tariff.
**Direct Database rates are filed in Section 20 of the FCC 1 Access Tariff
| Features | Benefits |
| Enables you to query LNP Database for routing end-users calls | |
| Provisioned via the Qwest SS7 Network | |
| Connection from the Qwest LNP database to the NPAC |
If you are a new Competitive Local Exchange Carrier (CLEC) and are ready to do business with Qwest, view Getting Started as a Facility-Based CLEC. If you are an existing CLEC wishing to amend your Interconnection Agreement or New Customer Questionnaire, you can find additional information in the Negotiations Template Agreement.
The following must be completed before you can order Local Number Portability Query Service:
During the pre ordering meeting you will need to complete the LINK DATA SHEET (CCSAC/SS7) PRE-ORDER INFORMATION and submit it to the Qwest Service Manager.
For more information regarding the pre ordering process refer to Common Channel Signaling Access Capability/Signaling System 7 (CCSAC/SS7).
LNP Database Query Service
The Qwest LNP Database Query Service Product and/or Options Activation is ordered by completing an Access Service Request (ASR) and following the Access Service Request Forms guidelines. Upon completion of the ASR, submit it to your Qwest Service Manager.
One ASR per link set is required per LATA per CSL. The Network Signaling Management Center (NSMC) then translates the point code(s) to all link sets in the LATA based on one service request. An ASR is not required per Two Six Code (TSC). Multiple point codes can be activated on a single ASR, but all of the point codes activated must be associated with the same CSL.
For more information regarding the ordering process refer to Common Channel Signaling Access Capability/Signaling System 7 (CCSAC/SS7).
Standard intervals and critical dates are available in the Service Interval Guide (SIG) for Access Services.
LNP Default Query Service
An order is not required for LNP Default Query Service.
For information regarding the provisioning and installation refer to Common Channel Signaling Access Capability/Signaling System 7 (CCSAC/SS7).
General maintenance and repair activities are described in the Maintenance and Repair Overview.
Your bill reflects all applicable rates and charges for LNP Query Service. Applicable charges will be billed out of Billing Information - Integrated Access Billing System (IABS™).
View Qwest courses in the Course Catalog.
For questions or additional information, contact your Qwest Service Manager. If you do not know who your Qwest Service Manager is, click here for additional information.
Qwest contact information is located in Wholesale Customer Contacts.
This section is being compiled based on your feedback
Last Update: July 14, 2009
Common Language® and CLLI™ are trademarks of Telcordia Technologies, Inc.
IABS™ is a trademark of Qwest Communications International, Inc.
