Transmission

The Transmission Services Testing Program demonstrates AT&T’s commitment to working with CPE vendors to provide high-quality telecommunications equipment and to enhance their product offering. Vendors and their customers can be more confident of network compatible products once they have successfully completed our testing program.

A broad range of transmission services are tested, from Fractional T1.5 to SONET-based T155.

ISDN Vendor testing program is currently suspended

Following is the list of services currently covered:

  • AT&T Fractional T1 service
  • AT&T Private Line T3 service
  • AT&T Private Line Fractional T3 service
  • AT&T Private Line T155
  • NetPROTECT
  • SONET
  • AT&T Private Line – High Performance Service
  • AT&T Private Line – Switched Digital Backup
  • 2E1 to E1 service
  • E1/T1 connectivity over T3 arrangement
  • AT&T Private Line OC-3 service, OC-12 and OC-48
  • E1 service

For more information on AT&T services visit the AT&T Data Services
website.

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