itu
RSS ituPathNavigator: Deployment Guide
White Paper PathNavigator is used to manage the call sessions between terminals, multipoint control units (MCU), and Gateways (GW), using both the H.323 and H.320 ITU communication protocols. The purpose of this paper is to describe the PathNavigator... [03 Jul 2008]
5GHz Spectrum Sharing Issues for Wireless LANs
White Paper This paper describes the state of the 5GHz spectrum as defined by ITU-R. The ITU-R has made an agenda item on the next World Radiocommunication Conference 2001 (WRC 2003) for harmonization of the spectrum. [03 Jul 2008]
CPE Interoperability Testing Using DSL Forum TR-048
White Paper The DSL industry recognized the need for standard testing of DSL modems, and set out to develop a model similar to the ITU V.90 standard for analog modems, which successfully led to the widespread distribution of dial-up modems and ensured... [03 Jul 2008]
Managing Call Flows Using SIP
White Paper ITU-T), but with lower complexity and overhead. his is the fifth of six technical briefing papers that examine the concepts, operation and analysis of converged networks. Specific protocols have been developed to manage the call establishment and... [03 Jul 2008]
PESQ - the New ITU Standard for End-to-end Speech Quality Assessment
White Paper This white paper describes the new intrusive voice quality assessment model, Perceptual Evaluation of Speech Quality (PESQ, ITU-T recommendation P.862). The history of PESQ, PAMS, PSQM and other models, and the ITU competition that led to the... [03 Jul 2008]
Perceptual Evaluation of Speech Quality (PESQ), the New ITU Standard for End-to-end Speech Quality Assessment, part I
White Paper Time alignment is essential for intrusive speech quality assessment models, such as PAMS and PESQ, to accurately predict the quality of network conditions such as mobile or voice over IP (VoIP). This paper provides a detailed analysis of the... [03 Jul 2008]
White Paper on Sage ’s G.168 Test Suite
White Paper This paper does not intend to replace the original ITU-T G.168 document. Instead, this paper should be used in conjunction with the ITU G.168 document, as this paper makes frequent references to the G.168 document. [03 Jul 2008]
Perceptual Speech Quality Measure White Paper
White Paper It is an ITU-T P.861 recommended objective method of estimating the subjectiv quality of voice-band speech codecs. PSQM stands for Perceptual Speech Quality Measure. The recommendation is based on the work of Beerends et al.The essence of the PSQM... [03 Jul 2008]
Mixing TrueWave RS Fiber with Other Single-Mode Fibers in a Network
White Paper Standards bodies, such as the IEC and ITU, recognize four categories of single-mode fiber: dispersionunshifted (G.652), dispersion-shifted (G.653), cutoff-shifted (G.654), and nonzero-dispersion A variety of single-mode fiber types can be found in... [03 Jul 2008]
Perceptual Evaluation of Speech Quality (PESQ) - a New Method for Speech Quality Assessment of Telephone Networks and Codecs
White Paper This white paper gives a summary of the key innovations in PESQ (ITU-T recommendation P.862), its structure, scope and applications, as well as performance results. [03 Jul 2008]
Testing of ACELP 8 v3 on Netrix 2200
White Paper As specified in ITU-T These tasks involved locating and/or resolving discrepancies between two sets of graphical and/or textual materials as described in ITU-T Recommendation P.800. To fully exercise the two telecommunications systems, a... [03 Jul 2008]
Modeling the Effects of Burst Packet Loss and Recency on Subjective Voice Quality
White Paper This uses an extended version of the ITU G.107 E-Model incorporating the effects of time varying packet loss and “recency”. This paper describes VQmon, a non-intrusive monitoring technique for Voice over IP networks that is computationally... [03 Jul 2008]
Wideband Speech Coding Standards and Applications
White Paper Several wideband speech coding standards are discussed and a special emphasis is given to the AMR-WB standard recently selected by 3GPP and ITU-T. This document presents a summary of wideband speech coding standards for wideband telephony... [03 Jul 2008]
Ethernet Passive Optical Networks
White Paper EPONs build on the International Telecommunications Union (ITU) standard G.983 for asynchronous transfer mode PONs (APON) and seek to bring to life the dream of a full-services access network (FSAN) that delivers converged data, video, and voice... [03 Jul 2008]
A Comparison of H.323v4 and SIP
White Paper Two standards have emerged for signaling and control of VoIP telephony: ITU-T H.323 and the IETF Session Initiated Protocol (SIP). This contribution compares and contrasts SIP to H.323v4 to help aid operators and vendors in the selection of a... [03 Jul 2008]
