Terminal Standards SDOs Mastermind plus Regional Flavors Or What? Joachim Pomy

Transcription

1 Internatinal Telecmmunicatin Unin Terminal Standards SDOs Mastermind plus Reginal Flavrs Or What? Jachim Pmy Senir Engineer, AVAYA GmbH Wrkshp n End-t-End QE/QS Geneva, June 2006

2 In the Past... End-t-End QS was defined by CCITT Tp-Dwn Apprach Master Plan with fixed Budget Allcatin Transmissin Plan G.101 Requirements fr Internatinal Chain and Natinal Systems at bth ends Requirements fr Natinal Systems defined in sectin 1.2 f Fascicle III f Blue Bk CCITT in Cntrl f the Wrld Cmmunity s Telephne Plant Wrkshp n End-t-End QE/QS Geneva, June

3 The CCITT Mastermind Apprach The Transmissin Plan, G.101, 1993 Cm plete internatinal telephne cnnectin (1.1) Natinal System (1.2) Internatinal Chain (1.4) Natinal System (1.2) LE PC PC LE l n n n n L L L L n n n n l Lcal system Fu r-wire c hain (1.3) Lcal system T /d06 Subscriber's set Lcal exchange with tw -wire s witch ing Tw-wire switching with terminating unit Fur-wire switching exchange with terminating unit Fur-wire switching exchange Internatinal switching centre (ISC) with virtual internatinal cnnecting L n LE l PC Internatinal circuits N atinal ext. circuits Lcal exchange Subscriber's line Primary centre NOTE The arrangements shwn fr the natinal systems are examples nly. The numbers given in brackets refer t the subsectins f sectin 1 (Fascicle lll.1 f the Blue Bk) in which Recmmendatins may be fund relevant t that part f the cnnectin. In additin, the circuits making up this chain must individually meet the requirements f subsectin 1.5. FIGURE 6/G.101 An internatinal cnnectin t illustrate the nnmenclature adpted Wrkshp n End-t-End QE/QS Geneva, June

4 Telephne Sets in Natinal Systems Administratin f Each Cuntry was respnsible fr Cmpliance with CCITT Recmmendatins Natinal Requirements fr Netwrk Elements and fr Terminals were derived Different Requirements fr Terminals in Different Cuntries due t Lcal Cnsideratins CCITT Mastermind plus Reginal Flavrs resulted in cntrlled End-t-End QS Wrkshp n End-t-End QE/QS Geneva, June

5 Terminal Requirements per Cuntry Wrkshp n End-t-End QE/QS Geneva, June

6 ... and Tday End-t-End QS is described by QS Classes fr UNI t UNI Cnnectins Updated Transmissin Plan G.101 QS Classes Y.1541 Muth-t-Ear Quality Estimatin E-Mdel G.107, G.108, G.109 QS Requirements fr Terminals in an IP / NGN Envirnment are Cuntry independent Wrkshp n End-t-End QE/QS Geneva, June

7 The Apprach G.101, 2003 TE UNI UNI TE Access Netwrk Transit Netwrk(s) Access Netwrk UNI-t-UNI Cnnectin End-t-End Cnnectin (Applicatin f E-Mdel) Wrkshp n End-t-End QE/QS Geneva, June

8 N Reginal Flavrs Required, anymre Different SDOs wrk n the same Tpics f Requirements fr VIP Terminals different mtivatin prtectin f grandfathered equipment supprt f shrt time t market enabling high QS fr glbal cmmunicatin philsphy f testing methdlgies cmmercial interests Lack f Glbal Crdinatin fr VIP Terminal Standards Wrkshp n End-t-End QE/QS Geneva, June

9 Key SDOs invlved in VIP Terminal QS Wrkshp n End-t-End QE/QS Geneva, June

10 S, what s ging n here? The Future is All-IP Therefre, Fcus n VIP Terminals In Principle Unique Set f QS Requirements pssible Cmpeting SDOs Cmpeting VIP Terminal Requirements Cmpeting Philsphical Appraches Sme Illustrative Examples... Wrkshp n End-t-End QE/QS Geneva, June

11 Handset Receive Frequency Respnse Mask Digital & VIP Terminals, Draft ANSI/TIA-810-B Desired Limits Mandatry Limits Arbitrary Level (db) Frequency (Hz) Wrkshp n End-t-End QE/QS Geneva, June

12 Cmparisn f Recent Frequency Respnse Masks Draft ANSI/TIA-810-B Cmbines grandfathered Philsphy with Vice-ver-IP Terminals Mixed Apprach: Mandatry Requirements and Desired Values as Guidance Prtectin f Current Develpments Draft ETSI DES/STQ Linear Frequency Respnse Multimedia & NGN - Ready Wrkshp n End-t-End QE/QS Geneva, June

13 Handset Receive Frequency Respnse Mask VIP Terminals, Draft ETSI DES/STQ Receive Frequency Respnse Mask 10 Relative Level [db] Upper Limit Lwer Limit Nminal Handset Suggested Handset Frequency [Hz] Wrkshp n End-t-End QE/QS Geneva, June

14 Cmparisn f TCLw Requirements Weighted Terminal Cupling Lss (TCLw) Key QS Parameter with respect t Ech as perceived by the User at the Far End Draft ANSI/TIA 810-B Requirements are Nrmalized t Ludness Settings at the Lcal User Draft ETSI DES/STQ Requirements are in Abslute Terms as perceived by the User at the Far End Wrkshp n End-t-End QE/QS Geneva, June

15 TCLw Qutes Draft ANSI/TIA 810-B, 6.6.2: The nrmalized value f TCLw at the high leak psitin shall be greater than 52 db fr IP sets. It is desirable that the nrmalized value f TCLw fr IP sets be greater than 55 db. Draft ETSI DES/STQ-00063, The minimum TCLw shall be > 55 db. Wrkshp n End-t-End QE/QS Geneva, June

16 Final Remark The Future is All-IP Glbal Standards fr NGN Netwrks are well Crdinated (GSI etc.) Unique Set f QS Requirements fr VIP Terminals is pssible Lack f Glbal Crdinatin fr VIP Terminal Standards Currently QS Requirements fr VIP Terminals are different in, ETSI, IEEE, and TIA Wrkshp n End-t-End QE/QS Geneva, June

17 Any questins? Wrkshp n End-t-End QE/QS Geneva, June