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admin | Category: What Causes Ed 2016 | 17.11.2013
Ces explications, n’ont pas pour but de rentrer dans des precisions techniques, mais de vous donner une idee reelle de ce que votre operateur vous propose lors de vos connexions quotidiennes. Les reseaux cellulaires se repartissent en plusieurs categories en fonction de leurs normes. L’icone signaletique restera immuablement 3G sauf bidouilles dans les entrailles du systeme.
Nous esperons que ces petites icones et nos explications vous eclaireront sur les capacites de votre iPhone a surfer plus ou moins vite sur la toile.
Pour cette raison, il n’affichera jamais rien de plus que 3G et cela quelque soit le forfait contracte.
Boutique Apple, n’importe quoi pour vendre les etuis iPhone et iPad dans leur rayon !
Cada dia que pasa aparecen nuevas y mas sofisticadas amenazas que impiden que podamos disfrutar por completo de nuestra navegacion por Internet phishing, robos de identidad, Tabnabbing y muchas otras estan agazapadas esperando a que demos un paso en falso. Las pantallas touchscreen frecuentemente presentan suciedad y manchas de grasa, la limpieza tiene que hacerse con mayor frecuencia y muchas veces esa limpieza no es la correcta para este tipo de material. Cuando se piensa en reducir costos, las tecnologias actualmente disponibles pueden ayudar a ahorrar en telecomunicaciones, y la tecnologia VoIP (Voz sobre IP) es una buena opcion para ello.
Las netbooks invadieron la esfera de la informatica nomade y han seducido en pocos meses a muchos usuarios. W telewizji ciagle sluchamy o nowym super szybkim Internecie mobilnym, ktory moze zapewnic rozrywke multimedialna calemu domostwu. Testy przeprowadzilem akurat z uzyciem karty SIM z sieci Plus, w ktorej to dostepna jest technologia HSPA+ (Evolved High Speed Packet Access). Niestety mialem problem z uzyskaniem podczas moich testow wysokiego poziomu sygnalu w technologi LTE (Long Term Evolution).
The Cellular infrastructure was  initially designed for circuit switched voice traffic and data communication was not initially supported on these networks. The Mobile Applications these days requires  a stringent QoS requirements with Service Level Aggrement (SLA). To evolve to all-IP networking environment, a Carrier Grade solution must be found for the backhaul of traffic.
The GPON system deploys a single Fiber distribution using Passive Optical Splitters (PSCs).
GPON has proved to be cost-effective and well equipped with in-built OAM and QoS capabilities.


The GPRS Traffic at BSCs are handled by the separate Packet Core network based on the IP Technology with the help of SGSN (Serving GPRS Support Node) and GGSN (Gateway GPRS Support Node). W sk?ad zestawu wchodzi antena paraboliczna z promiennikiem wykonanym w technologii mikropaskowej.
Les operateurs ne nous facilitent pas la tache pour nous y retrouver avec des petits noms d’oiseaux incomprehensibles et une opacite deconcertante. Es por eso que en este articulo te mostramos cuales son las mejores y mas seguras formas de mantener tus pantallas tactiles impecables y cuidadas siempre.
Juz od okolo 10 lat na terenie calego naszego kraju dostepna jest technologia EDGE (Enhanced Data rates for GSM Evolution), ktora wyciska ostatnie soki z poczciwego GSMa.
Znam nawet osoby, ktore wymuszaja w swoich telefonach prace za pomoca sieci 2G, poniewaz czas pracy na baterii jest wtedy duzo dluzszy oraz zasieg sieci jest lepszy.
Jednak musicie pamietac, ze zasoby komorki dzielone sa pomiedzy wszystkich  jej uzytkownikow, dlatego tez wynik rzedu 11 Mbps – 13,5 Mbps nalezy uznac za dobry. Jednak uzyskalem dosc ciekawy wynik, mianowicie dane byly pobierane z predkoscia 22,3 Mbps a wysylane o okolo polowe szybciej, tj. Na szczescie, dzieki zastosowaniu w LTE techniki transmisji opartej na OFDMA (Orthogonal Frequency-Division Multiple Access) oraz SC-FDMA (Single-carrier FDMA), mozemy tutaj posilkowac sie tzw. But services today are increasingly data centric and and even voice will be transported as a data service.
A proper SLA ensures guaranteed bit rate, low delay for realtime services like VoIP, Video on Demand and high throughtput for bandwidth hungry applications and five 9’s availability. The choices that existed those days are TDM and ATM based Backhaul which are not cost-effective but able to backhaul the low bit rate mobile applications traffic to some extent satisfying the customer. Wireless providers recognized the need to support Carrier Grade functionality in the backhaul (e.g. The DL traffic towards the NodeBs are sent as a broadcast and the UL traffic uses a Time Division Multiplexing Access (TDMA). GPON also supports VLAN for carrying mutiple stream of traffic with different QoS constraints. Since the Bandwidth  required at these Base Stations (BTSs) are limited to a maximum of about 5 Mbps 2 or 3 E1s are sufficient. The NodeB or 3G Base Stations need a bandwidth capacity or 15 ~ 30 Mbps in a non-HSPA type of cells.
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Czasza 35+40cm ze specjalnym uchwytem który mo?na regulowa? w zakresie do 60 stopni. Mobile networks are facing the challenge of evolving to a data centric service capable of carrying all service such as Voice, Data, Video and other value added services like Mobile TV, Online Gaming Applications, Video on Demand (VoD) and Music on Demand (MoD) on an unified backhaul to save costs.
Let’s examine below why the TDM and ATM backhaul were not popular in the long run and what alternate technology was chosen and its options in the following sections. QoS, scalability, efficient OAM, etc) with  cost in mind and so they first turned to ATM for backhaul.
Hence the high capacity, cost-effective, high quality backhaul using GPON is used in big cities. The 1+1 redundancy is provided in the Aggregation Stage of the backhaul by connecting EoSDH or GPON uplinks to two PEs (Provider Edge Routers) in the Metro Ethernet Networks. The HSPA (High Speed  Packet Access) supported NodeBs need about 42 Mbps or more to handle the additional Multi-media traffic from the customers.
Przy wysylaniu danych stacja bazowa przydzielila mi pasmo o szerokosci okolo 14,5 MHz, natomiast podczas pobierania dostalem okolo 5,5 MHz (zakladam tutaj, ze z powodu nie najlepszych warunkow radiowych, moj telefon odbieral dane korzystajac z mniej wydajnego schematu modulacji oraz kodowania). But in its current form is it not suitable for mobile backhaul  which demands a stringent QoS and OAM capabilities.
GPON systems are based on the Point-to-Multipoint topology uses OLT (Optical Line Terminal) at the root and ONUs (Optical Network Units) at the leaves.
The GPON system can generally cover a distance of 20 Kms from OLT or upto 60 kms with an extended reach option. All NodeBs are generally deployed with a minimum of Fast Ethernet (FE) Interface with VLAN capability. Wszystko to sprawia, ze mamy do czynienia z mobilnym polaczeniem Internetowym na poziomie lacza kablowego. Wychodzi tutaj na jaw sposob, w jaki korzystamy z kazdego lacza internetowego, mianowicie wiecej pobieramy niz wysylamy.



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