AT&T Clec Online

Handbook for California and Nevada


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Ordering Guides
Selective Router
Trunk Group Design Guides

Database top
Revised: 05/07/18 File Community Abbreviation and County Code Table
  File 21-State 911 Database Error Summary Guide

Ordering Guides top
Revised: 04/11/18 File E911 Technical Network Interface Specifictions

Selective Router top
Revised: 04/11/18 File CLEC Tandem Boundary Charts (Svc Across Tandem Bndrs)
Revised: 08/03/18 File Selective Router Table

Trunk Group Design Guides top
Revised: 09/20/19 File Trunk Group Design Guide - CA
Revised: 09/20/19 File Trunk Group Design Guide - NV
  The Trunk Group Design Guides (TGDGs) for CA and NV were developed originally to assist CLECs with configuring their 9-1-1 trunk groups to the legacy selective router responsible for call routing to Public Safety Answering Points (PSAPs). These documents should be used as guides only. Originating Service Providers (OSPs) choosing to use these guides must verify the accuracy of any information they will use by contacting the appropriate PSAP agency directly. OSPs should always obtain default ESN assignments by contacting the appropriate PSAP agency. Guides that do contain default ESN information contain the last known default ESN and this information is not actively maintained by the AT&T ILECs.