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Connex si Nortel: Packetized Voice, Data Transport Network
Last Updated: Jan 31 2003 11:42, Started by
Speedo
, Apr 29 2002 14:22
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0
#1
Posted 29 April 2002 - 14:22
Iata ca se misca ceva si la Connex spre 3G intr-un tarziu, alaturi de implementarea relativ lenta (problema de bani) care o face pentru un inel national FO terestru pe care ar urma sa "ruleze" un SDH.
Quote Connex Deploys Nortel Networks Packetized Voice, Data Transport Network in Romania Builds Foundation for Future Delivery of 3G Wireless Services; Reduces Capex, Opex BUCHAREST, Romania – Nortel Networks* [NYSE/TSE: NT] has supplied Connex* with a cost-effective, converged packet voice and data network based on Nortel Networks industry-leading softswitches and multiservice switches. The newly-deployed network supports Connex' 2G wireless network and enables a smooth future migration to 3G services. Connex is owned by Telesystem International Wireless and Vodafone. As part of the deployment, Connex will become the first service provider to leverage G729, an internationally accepted voice compression standard, in a wireless network. The compression enables an eight-fold reduction in bandwidth requirements, while maintaining voice quality by reducing the bandwidth required for voice from 64 kilobits per second (kbps) to 8 kbps. Connex has also deployed Nortel Networks Succession* Communication Server 2000 for the first time in a live 2G wireless network. "Nortel Networks has supplied us with the technology that will mean Connex will be better placed to deploy new services from current 2G networks through to future 2.5 and 3G networks," said Vishant Vora, chief technology officer, Connex. "This is another example of Nortel Networks working very closely with the Vodafone Group," said Brian Day, vice president, Next Generation Products, Nortel Networks. "Our solutions are enabling us to bring significant cost reductions to Connex and to all our customers by providing smooth, evergreen evolution to next generation services." Connex deployed Nortel Networks Succession Communication Server 2000, a softswitch that provides call control for live voice traffic across the core of Connex’ multi-service backbone. This high-capacity transit layer will reduce the number of Mobile Switching Centres required by Connex, leading to further capital expenditure savings. In addition, Connex deployed Nortel Networks Passport* 15000 Multiservice Switch and Passport Packet Voice Gateway. Succession Communication Server 2000 and Passport are key elements of Nortel Networks comprehensive voice over IP portfolio, which is designed to transform today’s networks into highly-reliable packet networks for delivery of voice, video and data services. Connex now joins other Vodafone associates and operating companies in owning and running a multiservice backbone based on Passport, including Vodafone D2 in Germany, Vodafone Spain, Vodafone New Zealand, and Vodafone Portugal. Passport positions operators to roll out new IP data services, as well as to offer existing voice services. Sursa NORTEL NETWORKS Greets, Speedo |
#2
Posted 31 January 2003 - 11:20
Quote Nortel connects Connex with new switch sale 30 January 2003 First European sale for latest Passport switch. Nortel Networks has won a contract to provide a backbone network to Romanian mobile operator Connex. Nortel claims the infrastructure it is providing will enable the convergence of voice and data traffic onto one network, allowing the deployment of 2G and 3G services. The contract represents the first European deployment of the particular Passport 20000 multiservice switch from Nortel. Vishant Vora, CTO for Connex said in a statement he chose the product because by linking in IP services with an existing ATM infrastructure it provided investment protection for future expansion. Connex is the brand name of MobiFon, Romania's first cellular network provider, which boasts over 2.5 million customers. Nortel claims to have more than 40,000 Passport systems installed across the world in over 1,500 customers. Source TotalTele . Greets, Speedo |
#3
Posted 31 January 2003 - 11:42
Quote Originally posted by Speedo ............... As part of the deployment, Connex will become the first service provider to leverage G729 , an internationally accepted voice compression standard, in a wireless network. The compression enables an eight-fold reduction in bandwidth requirements, while maintaining voice quality by reducing the bandwidth required for voice from 64 kilobits per second (kbps) to 8 kbps . Connex has also deployed Nortel Networks Succession* Communication Server 2000 for the first time in a live 2G wireless network. ...................... Asta spicuiam acum 2 ani dintr-un comunicat al NORTEL, si iata avem astazi o parte din explicatiile calitatii incerte (putin spus) a convorbirilor pe reteaua CONNEX, standardul G.729, adica codarea vocii pe 8Kbps, in cel mai fericit caz, pentru ca daca ar fi asa s-ar auzi acceptabil, dar dupa comprimari si decomprimari succesive avem experiente de "neuitat". Cititi pentru amintire Calitatea vocii la Connex si Orange . Practic acum s-a anulat orice diferenta intre Zapp si CONNEX din punct de vedere al pachetizarii vocii, calitatea codecurilor ramane in continuare in favoarea GSM-ului. Si inca ceva, daca sunteti pe CONNEX, nu va mai straduiti sa cumparati telefoane cu EFR (Enhanced Frequency Rate), adica o codare eleganta, calitate apropiata de fix, pentru ca pe teava nu se transporta decat 8Kbps, so why bother, merge si un second hand de acu 3 ani fara probleme, se va auzi la FEL! Se mai afirma in comunicatele de mai sus ca asta e tendinta mondiala, de packetizare a vocii, dar atentie NU DE SCADERE A CALITATII, altfel nu s-ar mai construi telefoane cu EFR sau nu s-ar mai fi lansat pe piata noul codec de voce AMR. Pacat...pacat. Greets, Speedo |
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