Print-Ready Version
Services > Testing > Integrated Access >

News and Announcements

New DSL GRs Planned

Telcordia is soliciting industry interest in participating in two Generic Requirement (GR) projects

  1. Generic Criteria for DSL Bonding DSLAMs (tentative title) - Existing DSL bonding specifications (e.g., ITU-T 998.1/2/3) specify criteria related to the network ("U") interface. This GR is expected to build on these standards with more complete equipment specifications.
  2. Generic Criteria in Support of DSL Line Diagnostics and Control (tentative title) - Existing line diagnostics and control specifications (i.e., ITU-T) G.992.3 and G.992.5 only specify the diagnostics and control parameters, and not the exact methods and commands for reporting and controlling these parameter. This proposed GR is expected to provided criteria related to methods of testing equipment compliance to the line diagnostics and control parameters, and common TL1 comments sets to retrieve line diagnostic information.

Request for Interest: x-PON Technology Tutorial

Telcordia is in the early planning stages for a Passive Optical Network (PON) technology seminar. The tutorial is expected to cover Broadband PON (B-PON/G.983.x), Gigabit PON (G-PON/G.984.x), and Ethernet PON (E-PON/IEEE 802.3ah) access systems. The focus will be on the Physical Media Dependent (PMD) and the Transmission Convergence (TC) portions of the controlling specifications, in addition to xPON system operations capabilities. If potentially interested, please submit this interest form.

GR-909-CORE Issue 2 Published

Telcordia has published (December 2004) a major revision to its well known and respected fiber access system generic requirements document, GR-909-CORE. GR-909-CORE, Issue 2, Generic Criteria for Fiber in the Loop (FITL) Systems, replaces GR-909-CORE, Issue 1. The primary reasons that drove this replacement included:

  1. Provide a multi-service delivery network reference model to serve as the framework for evolving FITL system criteria in support of integrated voice/video/data service delivery.
  2. Add criteria specific to Fiber-To-The-Premises (FTTP) deployment applications,
  3. Provide more detailed criteria in support of broadband service delivery.
  4. Add criteria specific to packet voice transport, including criteria in support of telephony services provided by a softswitch-based telecommunications network.
  5. Update optical criteria to reflect advances in technology, including harmonization with open optical industry specifications (e.g., ITU-T G.983).
  6. A preliminary set of FITL IP video multicast criteria and packet voice performance criteria have been added to this document. These criteria may be updated as the architectures and technologies used to deliver these service types mature.
  7. GR-909-CORE continues to provide FITL system criteria, assuming interfaces internal to the FITL system are system provider specific or are based on existing open optical interface specifications.

GR-909-CORE, Issue 2 purchase information can be found HERE.

See the Fiber Access System page for more information on GR-909-CORE, Issue 2, including additional information on the changes made since Issue 1 of the document and a Table of Contents listing.

New GR-303 Issues List Report Published

Telcordia published GR-303-ILR, Issue 4B in December of 2004, specifying several new local digital switch (LDS) GR-303 interface requirements.

As part of the 2004 reissue of GR-909-CORE, field troubles were identified that prevented GR-303-based fiber-in-the-loop (FITL) systems from conveying system failure information to embedded telephony test systems (i.e., MLT or MLT-like test systems). The analysis of the FITL system field troubles revealed that some LDS implementations were not following the intended test access behaviors of GR-303-CORE. This ILR document provides GR-303-CORE criteria changes to clarify the expected LDS test access behavior.

For FITL applications, LECs have indicated that it is important to be able to establish test access to lines that are out-of-service (OOS) due to FITL system failures (e.g., HDT optical line unit failure, HDT-to-ONU facility failure, ONU equipment failure) in order to allow the FITL system to convey the failure location to the embedded telephony test system (via one of the a DC test signatures specified in GR-909-CORE, Issue 2, Section 12.4.6). Accurate failure location information allows the LEC to properly dispatch repair personnel.

To this goal, switching systems are expected to allow normal processing of test access requests to analog line terminations whose primary service state attribute is “OOS” and whose secondary service state attribute is "faf" (OOS due to a facility failure) or "fef" (Effectively out of service due to controlling/supporting entity). In this context, normal processing means allow series of EOC and TMC messages required to establish test access to occur as it would if the line was in-service.

GR-303-ILR, Issue 4B specifies three new LDS requirements related to circuit testing, including the expected temporal relationship between GR-303 TMC and EOC messaging generated by the LDS in response to a test access request.

GR-303-ILR, Issue 4B, is available at not cost to all GR-303 Issue 4 license holders. GR-303 license information can be obtained HERE.

ADSL TR-067 Interoperability Testing

Telcordia is now qualified by Bell Canada, BellSouth, SBC, and Verizon to perform TR-067 ADSL CPE interoperability testing. For more information visit our ADSL Transceiver Testing and Consulting page.