H.323 Series Implementers Guide - January 2004

INTERNATIONAL TELECOMMUNICATION UNION

ITU-T G.798 Implementers’ Guide TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (27 May 2005)

SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS

Implementers’ Guide for ITU-T Rec. G.798 (06/2004) Characteristics of optical transport network hierarchy equipment functional blocks Implementers’ Guide (05/2005) for ITU-T G.798 (06/2004) ii Summary This document is an Implementers' Guide for ITU-T Recommendation of G.798 (06/2004).

Source This document was agreed by ITU-T Study Group 15 on 27 May 2005.

Implementers’ Guide (05/2005) for ITU-T G.798 (06/2004) i Table of Contents

1.0 INTRODUCTION...... 1

2.0 TERMS TO BE REMOVED FROM REC. G.798...... 1

Implementers’ Guide (05/2005) for ITU-T G.798 (06/2004) ii IMPLEMENTERS’ GUIDE FOR RECOMMENDATION G.798 (CHARACTERISTICS OF OPTICAL TRANSPORT NETWORK HIERARCHY EQUIPMENT FUNCTIONAL BLOCKS)

Implementers’ Guide for definitions and terms found in Rec. G.798 Abstract SG15/WP3 has approved terminology Recommendations for Synchronous Digital Hierarchy (SDH) (Rec. G.780/Y.1351), Optical Transport Networks (OTN) (Rec. G.870/Y.1352) and Automatically Switched Optical Networks (ASON) (Rec. G.8081/Y.1353). This Implementers’ Guide identifies terms originally listed in Rec. G.798, which can now be removed from that Rec. and replaced with text pointing to the appropriate Terminology Rec. for the definition. This Implementers’ Guide should remain in force until such time as Rec. G.798 is revised and reissued.

1.0 Introduction Study Group 15 has agreed to the development of a single source Recommendation for definitions currently found in Working Party 3 SDH/OTN/ASON Recommendations. However, not all affected Recommendations are currently in process for revision. To facilitate this transition, this Implementers’ Guide identifies the terms which can be removed and replaced when the initial source Recommendation is revised and reissued. This Implementers’ Guide should remain in force until such time as Rec. G.798 is revised and reissued.

2.0 Terms to be removed from Rec. G.798 The following table identifies the target term, with appropriate replacement definition text for the Recommendation identified in the title of this Implementers’ Guide.

Original Term Replacement text 3.67 Access function (AC): An access function provides 3.64 Access function (AC): See ITU-T Rec. access (add, drop, drop and continue) at CPs to G.870/Y.1352. communication channels transported in the overhead. 3.68 CBRx: Is a CBR signal with the approximate bit rate 3.65 CBRx: See ITU-T Rec. G.870/Y.1352. x. 3.69 TCM Control function (TCMC): A TCM control 3.66 TCM Control function (TCMC): See ITU-T Rec. function is responsible for the activation/deactivation of a G.870/Y.1352. TCM trail. 3.70 TCM Control information (TCMCI): The TCMCI 3.67 TCM Control information (TCMCI): See ITU-T is the information that passes over a TCMCP for Rec. G.870/Y.1352. activation/deactivation of a TCM trail. 3.71 TCM Control point (TCMCP): A reference point 3.68 TCM Control point (TCMCP): See ITU-T Rec. where the output of an atomic function is bound to the G.870/Y.1352. input of the TCM control function, or where the output of the TCM control function is bound to the input of an atomic function. 3.72 x: gives the approximate bit rate for a CBR signal. It 3.69 x: See ITU-T Rec. G.870/Y.1352 (Clause 5 –

Implementers’ Guide (05/2005) for ITU-T G.798 (06/2004) 1 Original Term Replacement text is used in the form "unit value, unit, [fractional unit “Conventions”). value]". The currently defined unit value is "G" for gigabit/s. Examples for x are "40G" for 40Gbit/s and "2G5" for 2.5 Gbit/s.

The following table identifies the terms that G.798 references to other Recommendations and identifies replacement text as appropriate.

Original Term Replacement text 3.1 BIP-X: See ITU-T Rec. G.707. 3.1 BIP-X: See ITU-T Rec. G.780/Y.1351. 3.2 Adapted information (AI): See ITU-T Rec. G.805. 3.2 Adapted information (AI): See ITU-T Rec. G.805. 3.3 Access Point: See ITU-T Rec. G.805. 3.3 Access Point: See ITU-T Rec. G.805. 3.4 Characteristic information (CI): See ITU-T Rec. 3.4 Characteristic information (CI): See ITU-T Rec. G.805. G.805. 3.5 Connection point (CP): See ITU-T Rec. G.805. 3.5 Connection point (CP): See ITU-T Rec. G.805. 3.6 Network: See ITU-T Rec. G.805. 3.6 Network: See ITU-T Rec. G.805. 3.7 Subnetwork: See ITU-T Rec. G.805. 3.7 Subnetwork: See ITU-T Rec. G.805. 3.8 Optical transport network (OTN): See ITU-T Rec. 3.8 Optical transport network (OTN): See ITU-T Rec. G.872. G.870/Y.1352. 3.9 Optical Multiplex Section (OMS): See ITU-T Rec. 3.9 Optical Multiplex Section (OMS): See ITU-T Rec. G.872. G.872. 3.10 Optical Transmission Section (OTS): See ITU-T 3.10 Optical Transmission Section (OTS): See ITU-T Rec. G.872. Rec. G.872. 3.11 Optical transport module (OTM-n[r].m): See 3.11 Optical transport module (OTM-n[r].m): See ITU-T Rec. G.709. ITU-T Rec. G.870/Y.1352. 3.12 OTM with full functionality (OTM-n.m) : See 3.12 OTM with full functionality (OTM-n.m) : See ITU-T Rec. G.709 ITU-T Rec. G.870/Y.1352. 3.13 OTM with reduced functionality (OTM-0.m, 3.13 OTM with reduced functionality (OTM-0.m, OTM-nr.m) : See ITU-T Rec. G.709 OTM-nr.m) : See ITU-T Rec. G.870/Y.1352. 3.14 Optical channel (OCh[r]) : See ITU-T Rec. G.709 3.14 Optical channel (OCh[r]) : See ITU-T Rec. G.870/Y.1352. 3.15 Optical channel with full functionality (OCh) : 3.15 Optical channel with full functionality (OCh) : See ITU-T Rec. G.709 See ITU-T Rec. G.870/Y.1352. 3.16 Optical channel with reduced functionality 3.16 Optical channel with reduced functionality (OChr) : See ITU-T Rec. G.709 (OChr) : See ITU-T Rec. G.870/Y.1352. 3.17 Optical channel transport unit (OTUk[V]) : See 3.17 Optical channel transport unit (OTUk[V]) : See ITU-T Rec. G.709 ITU-T Rec. G.870/Y.1352. 3.18 Completely standardised OTUk (OTUk) : See 3.18 Completely standardised OTUk (OTUk) : See ITU-T Rec. G.709 ITU-T Rec. G.870/Y.1352. 3.19 Functionally standardised OTUk (OTUkV) : See 3.19 Functionally standardised OTUk (OTUkV) : See ITU-T Rec. G.709 ITU-T Rec. G.870/Y.1352. 3.20 Optical channel data unit (ODUk) : See ITU-T 3.20 Optical channel data unit (ODUk) : See ITU-T Rec. G.709 Rec. G.870/Y.1352.

Implementers’ Guide (05/2005) for ITU-T G.798 (06/2004) 2 Original Term Replacement text 3.21 ODUk Path (ODUkP) : See ITU-T Rec. G.709 3.21 ODUk Path (ODUkP) : See ITU-T Rec. G.870/Y.1352. 3.22 ODUk TCM (ODUkT) : See ITU-T Rec. G.709 3.22 ODUk TCM (ODUkT) : See ITU-T Rec. G.870/Y.1352. 3.23 Optical channel payload unit (OPUk) : See ITU-T 3.23 Optical channel payload unit (OPUk) : See ITU-T Rec. G.709 Rec. G.870/Y.1352. 3.24 Optical physical section of order n (OPSn) : See 3.24 Optical physical section of order n (OPSn) : See ITU-T Rec. G.709 ITU-T Rec. G.870/Y.1352. 3.25 OTM Overhead Signal (OOS) : See ITU-T Rec. 3.25 OTM Overhead Signal (OOS) : See ITU-T Rec. G.709 G.870/Y.1352. 3.26 Optical supervisory channel (OSC) : See ITU-T 3.26 Optical supervisory channel (OSC) : See ITU-T Rec. G.709 Rec. G.870/Y.1352. 3.27 Optical transport hierarchy (OTH) : See ITU-T 3.27 Optical transport hierarchy (OTH) : See ITU-T Rec. G.709 Rec. G.870/Y.1352. 3.28 CBR2G5: See ITU-T Rec. G.709 3.28 CBR2G5: See ITU-T Rec. G.870/Y.1352. 3.29 CBR10G: See ITU-T Rec. G.709 3.29 CBR10G: See ITU-T Rec. G.870/Y.1352. 3.30 CBR40G: See ITU-T Rec. G.709 3.30 CBR40G: See ITU-T Rec. G.870/Y.1352. 3.31 Adaptation function (A) : See ITU-T Rec. G.806. 3.31 Adaptation function (A) : See ITU-T Rec. G.806. 3.32 Connection function (C) : See ITU-T Rec. G.806. 3.32 Connection function (C) : See ITU-T Rec. G.806. 3.33 Connection matrix (CM) : See ITU-T Rec. G.806. 3.33 Connection matrix (CM) : See ITU-T Rec. G.806. 3.34 Compound function: See ITU-T Rec. G.806. 3.34 Compound function: See ITU-T Rec. G.806. 3.35 Defect: See ITU-T Rec. G.806. 3.35 Defect: See ITU-T Rec. G.806. 3.36 Fault cause: See ITU-T Rec. G.806. 3.36 Fault cause: See ITU-T Rec. G.806. 3.37 Function: See ITU-T Rec. G.806. 3.37 Function: See ITU-T Rec. G.806. 3.38 Management information (MI) : See ITU-T Rec. 3.38 Management information (MI) : See ITU-T Rec. G.806. G.806. 3.39 Management point (MP) : See ITU-T Rec. G.806. 3.39 Management point (MP) : See ITU-T Rec. G.806. 3.40 MST_Range: See ITU-T Rec. G.806. 3.40 MST_Range: See ITU-T Rec. G.806. 3.41 Process: See ITU-T Rec. G.806. 3.41 Process: See ITU-T Rec. G.806. 3.42 Remote information (RI) : See ITU-T Rec. G.806. 3.42 Remote information (RI) : See ITU-T Rec. G.806. 3.43 Remote point (RP) : See ITU-T Rec. G.806. 3.43 Remote point (RP) : See ITU-T Rec. G.806. 3.44 Server signal degrade (SSD) : See ITU-T Rec. 3.44 Server signal degrade (SSD) : See ITU-T Rec. G.806. G.806. 3.45 Server signal fail (SSF) : See ITU-T Rec. G.806. 3.45 Server signal fail (SSF) : See ITU-T Rec. G.806. 3.46 Sub-network connection (SNC) : See ITU-T Rec. 3.46 Sub-network connection (SNC) : See ITU-T Rec. G.806. G.806. 3.47 Termination connection point (TCP) : See ITU-T 3.47 Termination connection point (TCP) : See ITU-T Rec. G.806. Rec. G.806. 3.48 Trail signal degraded (TSD) : See ITU-T Rec. 3.48 Trail signal degraded (TSD) : See ITU-T Rec. G.806. G.806. 3.49 Trail signal fail (TSF) : See ITU-T Rec. G.806. 3.49 Trail signal fail (TSF) : See ITU-T Rec. G.806.

Implementers’ Guide (05/2005) for ITU-T G.798 (06/2004) 3 Original Term Replacement text 3.50 Trail termination function (TT) : See ITU-T Rec. 3.50 Trail termination function (TT) : See ITU-T Rec. G.806. G.806. 3.51 Trail signal degraded (TSD) : See ITU-T Rec. (Editor’s note: duplicate term – ignore) G.806. 3.52 Trail signal degraded (TSD) : See ITU-T Rec. (Editor’s note: duplicate term – ignore) G.806. 3.53 Trail signal degraded (TSD) : See ITU-T Rec. (Editor’s note: duplicate term – ignore) G.806. 3.54 Automatic power reduction (APR) : See ITU-T 3.51 Automatic power reduction (APR) : See ITU-T Rec. G.664. Rec. G.664. 3.55 Access point identifier (API) : See ITU-T Rec. 3.52 Access point identifier (API) : See ITU-T Rec. G.831. G.831. 3.56 Member : See ITU-T Rec. G.7042. 3.53 Member : See ITU-T Rec. G.7042. 3.57 APS protocol : See ITU-T Rec. G.808.1. 3.54 APS protocol : See ITU-T Rec. G.870/Y.1352. 3.58 Protection class : See ITU-T Rec. G.808.1. 3.55 Protection class : See ITU-T Rec. G.870/Y.1352. 3.58.1 Sub-network connection protection : See 3.55.1 Sub-network connection protection : See ITU- ITU-T Rec. G.808.1. T Rec. G.870/Y.1352. 3.58.1.1 Sublayer monitored (/S) : See ITU-T Rec. 3.55.1.1 Sublayer monitored (/S) : See ITU-T Rec. G.808.1. G.870/Y.1352. 3.58.1.2 Non-intrusive monitored (/N) : See ITU-T 3.55.1.2 Non-intrusive monitored (/N) : See ITU-T Rec. G.808.1. Rec. G.870/Y.1352. 3.58.1.3 Inherent monitored (/I) : See ITU-T Rec. 3.55.1.3 Inherent monitored (/I) : See ITU-T Rec. G.808.1. G.870/Y.1352. 3.59 Component : See ITU-T Rec. G.808.1. 3.56 Component : See ITU-T Rec. G.870/Y.1352. 3.59.1 Bridge : See ITU-T Rec. G.808.1. 3.56.1 Bridge : See ITU-T Rec. G.870/Y.1352. 3.59.1.1 Permanent bridge : See ITU-T Rec. 3.56.1.1 Permanent bridge : See ITU-T Rec. G.808.1. G.870/Y.1352. 3.59.1.2 Broadcast bridge : See ITU-T Rec. 3.56.1.2 Broadcast bridge : See ITU-T Rec. G.808.1. G.870/Y.1352. 3.59.2 Selector : See ITU-T Rec. G.808.1. 3.56.2 Selector : See ITU-T Rec. G.870/Y.1352. 3.59.2.1 Selective selector : See ITU-T Rec. G.808.1. 3.56.2.1 Selective selector : See ITU-T Rec. G.870/Y.1352. 3.60 Architecture : See ITU-T Rec. G.808.1. 3.57 Architecture : See ITU-T Rec. G.870/Y.1352. 3.60.1 1+1 (protection) architecture : See ITU-T Rec. 3.57.1 1+1 (protection) architecture : See ITU-T Rec. G.808.1. G.870/Y.1352. 3.60.2 1:n (protection) architecture : See ITU-T Rec. 3.57.2 1:n (protection) architecture : See ITU-T Rec. G.808.1. G.870/Y.1352. 3.61 Operation : See ITU-T Rec. G.808.1. 3.58 Operation : See ITU-T Rec. G.870/Y.1352. 3.61.1 Revertive (protection) operation : See ITU-T 3.58.1 Revertive (protection) operation : See ITU-T Rec. G.808.1. Rec. G.870/Y.1352. 3.61.2 Non-revertive (protection) operation : See 3.58.2 Non-revertive (protection) operation : See ITU-T Rec. G.808.1. ITU-T Rec. G.870/Y.1352. 3.62 Signal : See ITU-T Rec. G.808.1. 3.59 Signal : See ITU-T Rec. G.870/Y.1352.

Implementers’ Guide (05/2005) for ITU-T G.798 (06/2004) 4 Original Term Replacement text 3.62.1 Traffic signal : See ITU-T Rec. G.808.1. 3.59.1 Traffic signal : See ITU-T Rec. G.870/Y.1352. 3.62.2 Normal traffic signal : See ITU-T Rec. 3.59.2 Normal traffic signal : See ITU-T Rec. G.808.1. G.870/Y.1352. 3.62.3 Extra traffic signal : See ITU-T Rec. G.808.1. 3.59.3 Extra traffic signal : See ITU-T Rec. G.780/Y.1351. 3.62.4 Null signal : See ITU-T Rec. G.808.1. 3.59.4 Null signal : See ITU-T Rec. G.870/Y.1352. 3.63 Switching : See ITU-T Rec. G.808.1. 3.60 Switching : See ITU-T Rec. G.870/Y.1352. 3.63.1 Bi-directional (protection) switching : See 3.60.1 Bi-directional (protection) switching : See ITU-T Rec. G.808.1. ITU-T Rec. G.870/Y.1352. 3.63.2 Uni-directional (protection) switching : See 3.60.2 Uni-directional (protection) switching : See ITU-T Rec. G.808.1. ITU-T Rec. G.870/Y.1352. 3.64 Protection : See ITU-T Rec. G.808.1. 3.61 Protection : See ITU-T Rec. G.870/Y.1352. 3.65 APS channel : See ITU-T Rec. G.873.1. 3.62 APS channel : See ITU-T Rec. G.870/Y.1352. 3.66 Protection group : See ITU-T Rec. G.873.1. 3.63 Protection group : See ITU-T Rec. G.870/Y.1352. ______

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