TR 54079, September 1999

AT&T Private Line Service OC-192 Service Description and Interface Specification

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Scope

This Technical Reference provides Network Interface (NI) and Point of Interface (POI) Specifications for the AT&T Private Line OC-192 (Optical Carrier Level 192) Service. The document includes a description of the service, technical parameters, physical interface requirements, logical interface requirements, and other necessary criteria for connecting Customer Premises Equipment (CPE) and/or access to AT&T OC-192 circuits to obtain the performance characteristics identified herein. OC-192 service features optical interfaces at the NI and the POI.

Organization

Section 1 - Provides the purpose and organization of this document.

Section 2 - Provides an overview description of the AT&T Private Line OC-192 Service.

Section 3 - Provides availability and error performance parameters.

Section 4 - Provides interface specifications.

Section 5 - Provides synchronization and timing specifications.

Section 6 - Provides network alarm and status conditions.

Section 7 - Provides customer premises equipment characteristics.

Section 8 - Provides testing and maintenance requirements.

Section 9 - Provides references to related documents.

Services

The AT&T Private Line Service (APLS) OC-192 Inter-Office Channel (IOC) Service is a service that provides dedicated point-to-point 9953.28 Megabits per second (Mbps), or 10 Gigabits per second (Gbps), line rate digital service for STS-192/192c (Synchronous Transport Signal Level 192/192 concatenated) signals. A point-to-point service is defined as a two-way service where traffic originates (or terminates) in one location and terminates (or originates) in the other. Besides STS-192c signals, the OC-192 IOC may be comprised of STS-1 (Synchronous Transport Signal Level 1), and/or STS-3c (Synchronous Transport Signal Level 3 concatenated), and/or STS-12c (Synchronous Transport Signal Level 12 concatenated) and/or STS-48c (Synchronous Transport Signal Level 48 concatenated) tributary signals or combinations of these tributary signals as required per customer application. The differences between the line rates and effective customer payloads are due to bits reserved for SONET overhead signaling. OC-192 service features optical interfaces at the NI and the POI.

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