SONET Add-Drop Multiplexer (SONET ADM) Generic Criteria
Document Number GR-496
Issue Number 02
Issue Date Aug 2007
Replaces TR-NWT-000496 Issue03
ABSTRACT: Issue 2 of GR-496, SONET Add-Drop Multiplexer (SONET ADM) Generic Criteria , replaces Issue 1.
GR-496 provides generic criteria for a particular type of SONET equipment called a SONET Add-Drop Multiplexer (ADM) or its
functional equivalent. A SONET ADM is a Network Element (NE) that provides either one or two "high-speed" SONET interfaces, as well as
"tributary" interfaces at one or more of the various rates supported in the digital network. SONET ADMs are especially prolific in Core
and Access Metropolitan Area Networks (MANs) in ring configurations.
Issue 2 of GR-496 discusses specific features and functions for this SONET equipment, and aligns with the requirements in Telcordia
GR-253, Synchronous Optical Network (SONET) Transport Systems: Common Generic Criteria. It also has been updated to reflect
industry developments for ADMs during the last nine years.
Issue 2 of GR-496
The criteria in GR-496 are intended to be applicable to SONET ADMs operating in any of a wide variety of possible applications and
network configurations, thereby increasing its value and importance for carriers, suppliers, and manufacturers.
- Discusses SONET ADM functions and applications, network compatibility, SONET ADM features, and quality and reliability
- Coordinates OC-192 criteria and requirements with GR-253
- Adds support for OC-768 high speed interfaces, OC-192 tributary interfaces, and STS-192c cross connections
- Adds support for virtual concatenation (VCAT)
- Coordinates bit integrity criteria with GR-253.
GR-496 and GR-1400 replaced TR-NWT-000496 and TR-TSY-000496-SUP01.
When using GR-496, you may need to refer to GR-253, GR-499, GR-1230, GR-1244, and/or GR-1400. You may also want
to refer to GR-57, GR-472, and/or GR-474.
Components of this product are:
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