tag:blogger.com,1999:blog-16720227751955400292024-09-04T15:33:52.000-07:00This site is dedicated to bring information about telecomm and datacomm architecture, design, protocols, interfaces and products, including consumer electronics.bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.comBlogger17125tag:blogger.com,1999:blog-1672022775195540029.post-78545741929925737212008-11-10T12:07:00.000-08:002008-11-19T11:56:43.253-08:00

iPhone is a complex piece of device carrying multiple functionality, including Touch screen, video, voice, wireless phone, GPS, Internet, Etc. It is more like a hand held computer than a phone.Special hardware has been added to the iPhone to make it an effective and powerful mobile device. This includes various sensors, such as an accelerometer and proximity sensor, multi-touch capable screen to

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-38047718039221153952008-10-21T12:41:00.000-07:002008-10-31T13:29:21.440-07:00

The "Edge QAM" came to existence with Switched Digital Video (SDV). Prior to SDV, QAM modulation was used in cable plants to carry all digital cable services. It sits in hub and is used to move video, voice and data from headends to homes. Each QAM, in a rack-mounted metal box, is capable of carrying 38.8 Mbps of downstream data which is equivalent to one analog channel, 2-3 High-Definition (HD)

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-4605032370359893352008-10-09T16:51:00.000-07:002008-10-09T19:26:03.200-07:00

IPTV operation is booming worldwide at a rapid pace. In Europe alone the IPTV subscribers is more than 1.535 millions. Ever since YouTube began demonstrating the potential of the Internet medium, everyone is racing to launch IPTV, which will eventually replace traditional television broadcasting.Following some fundamental guideline can help launching and maintaining successful IPTV services. The

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-55615068524011814402008-10-02T20:15:00.000-07:002008-10-04T09:51:43.541-07:00

One of the most critical challenges of IPTV cable operators is to provide quality of service to their viewers. Since IPTV uses IP networking mechanism to reach the subscribers, many artifacts of Internet can cause poor Quality of Experience (QoE) to viewers, which leads decreased customer satisfaction and increased customer complains through call centers. It is very essential for IPTV operators

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-11376898696508058362008-09-30T12:43:00.000-07:002008-09-30T13:31:32.799-07:00

IPTV is becoming more and more popular among cable and telco operators as demand for it is growing very rapidly. IPTV not only provides better advertising solution for the cable operators, it makes it easier for cable operators to be more innovative on pay-TV services. IPTV leverages the IP network to deliver video content to TV viewers using set-top-box, and providing picture quality

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com1tag:blogger.com,1999:blog-1672022775195540029.post-80919624034161614252008-09-21T13:22:00.000-07:002008-09-24T11:37:20.450-07:00

Designing web sites that are responsive to customer needs is a critical prerequisite for the success of online services. In this article three primary development aspects of Web-based services are discussed. The common style and architecture used to design Web-based services, Software development methodology, Software management methodology and Internet Routing Protocol.Building Web Services

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-51043257988665235192008-09-09T12:07:00.000-07:002008-09-10T11:56:34.201-07:00

Apple just announced the new version of iPod Touch, iPod Nano and iTunes 8. These new products, as announced on 9/9/08, all include a new features called "Genius", which is a new technology from Apple to create playlists based on the song you're listening to and the music in your library in an easy way.The fourth-generation iPod Nano is only 0.2 inches thick, the thinnest player Apple has ever

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-63351468469648006042008-09-09T11:28:00.000-07:002008-09-09T11:34:26.377-07:00

IPTV and especially SDV is becoming very hot among all telco and cable operators for numurous benefits they bring to them, including bandwidth allocation, local advertisement, better QoS and QoE. Along with them, these new emerging technologies bring many terminologies and jorgons. In this article, I have collected the most commonly used terminologies in this catorgory from various sources to

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-24317226097417028982008-09-08T21:30:00.000-07:002008-09-09T09:14:45.377-07:00

In this article Switched Digital Video (SDV) sequence of operation is described in details. This sequence can be used as a guideline to program SDV client-server operations. The SDV sequence of operation is classified into two main area: Set-Top-Box (STB) Auto-Discovery Process and Subscriber surfs to a switched channel. All these activities should not take more than 150ms.For overview of the SDV

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-19801555845576371092008-08-28T14:59:00.000-07:002008-08-28T20:28:49.106-07:00

In this article the advantages and features of both CDMA and GSM technology is described, followed by comparison between the two.CDMA (Code Division Multiple Access) is a channel access method which allows several transmitters to send information simultaneously over a single communication channel and hence multiplexing many users over the same physical channel. This technology is used by cell

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-89540773573432336862008-07-22T19:36:00.000-07:002008-08-21T07:51:07.143-07:00

Telco and cable operators are recognizing numerous benefits of SDV and getting more attractive to deploying it. Prior to SDV, the digital video broadcasting started with satellite DTH (Direct To Home) which gave to the cable industry the ability to provide a mixed of analog and MPEG-2 digital services as follows:70 to 90 analog 6 MHz channels8 to 10 MPEG-2 simulcast standard definition (SD) 6 MHz

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-24093049404129471502008-07-17T12:16:00.000-07:002008-09-09T09:17:41.026-07:00

Switched Digital Video (SDV)With sufficient switching capacity placed at the central office, the amount of content that can be delivered to a single household is infinite. The ability to offer such an amount of video programming in a telco network could be exploited as a competitive advantage. Switched digital video (SDV) is a cable technology that attempts to answer this challenge. It was

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-13056547913512833592008-07-14T19:23:00.001-07:002008-09-26T11:12:41.055-07:00

The SDV is becoming more and more attractive among telco and cable operators for number of benefits it brings to telcos. In this article some of the common and major issues of SDV with possible solutions is described.Prior to SDV systemWhen satellite DTH started to offer digital video, the cable industry response was a mixed analog and MPEG-2 digital plant with provisions for:70 to 90 analog 6

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-78122347124056869282008-07-10T11:19:00.000-07:002008-09-26T11:09:12.799-07:00

The Switched Digital Video (SDV) requires a reporting and monitoring systems (let's call it SVRM for simplicity) for the telco operators to make decision about program expansion, network design and to determine where to roll out new programming and advertising to increase advertising.The SVRM architecture consists of a receiving agent, a database system, a reporting agent, and a User Interface,

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-86978587710340973592008-06-30T10:18:00.000-07:002008-08-05T13:24:19.132-07:00

Most of the telecommunication and data-communication products use Real Time Operating Systems (RTOS). Application of a RTOS is called embedded software. Let's discuss some basic definitions and classification of RTOS and how Linux does it.Since Linux is an open-source operating system with strong ability to support multiple processors, including MIPS, x86, PowerPC, its becoming more popular with

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0tag:blogger.com,1999:blog-1672022775195540029.post-88026774436276585032008-06-12T22:07:00.000-07:002008-09-26T11:08:28.664-07:00

IntroductionIn a cable network, groups of homes are connected on a common branch of coax cable. That is, groups of subscribers share access to the same downstream frequencies, and race for access to shared upstream frequencies. Where as, the traditional wireline networks are considered point to point, from a central office directly to a subscriber. Therefore, with sufficient switching capacity

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com1tag:blogger.com,1999:blog-1672022775195540029.post-26480186136581111552008-06-10T19:14:00.000-07:002008-07-10T11:19:09.441-07:00

NIC stands for Network Interface Card. It allows users to get connected to each other through cable or wireless. It basically allows two computers communicate with each over networking or Ethernet.NIC supports both OSI layer1 (physical) and layer2 (data link) by providing physical address to networking medium and low-level addressing mechanism through the use of MAC address.MAC address, which is

bruce atlasihttp://www.blogger.com/profile/04815514684523230923noreply@blogger.com0