By John R. Abrahams, Mauro Lollo

ISBN-10: 158053497X

ISBN-13: 9781580534970

ISBN-10: 1580536220

ISBN-13: 9781580536226

When you have the accountability to layout, improve and deal with facts networks to hold IP Telephony (voice, video and data); need assistance in comparing competing IP-Centrex and IP-PBX structures; or desire suggestions in specifying the parameters for a carrier point contract for IP-Centrex, this specific reference will give you the information you must get the task performed correct. It lets you extra correctly estimate the time and assets had to enforce IP Telephony on your association. The e-book describes the IP-Centrex alternative of getting the phone corporation take accountability for the provider supply and provides the type of info provider companies have to enhance advertising and marketing and revenues campaigns for IP-Centrex companies.

This detailed source is helping you current your company’s telecom functions, and provides a greater realizing of the pluses and minuses of aggressive revenues displays. It comprises precis descriptions of 14 IP telephony platforms at the world’s industry, whereas essentially choosing the benefits and drawbacks of IP-Centrex. There are targeted monetary analyses of 3 real looking case stories, including descriptions of the way Centrex is utilized in quite a few enterprises.

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One major advantage that will become obvious with IP-Centrex is that customers can afford to rent a second broadband access link to their main locations, providing better availability of service than was feasible with legacy Centrex. On a fair accounting basis, the true cost of the copper wire component of a local loop (the traditional “last mile”) is around $10 per 46 Centrex or PBX: The Impact of IP month. The actual cost of local access bandwidth to support one IPCentrex user, in a medium-sized office of 100 users, will be less than onehalf of that amount.

For each voice or video application). The customer also has addressing freedom, as there may be identical local IP addresses within two or more networks on one VPN. 7. The MPLS-equipped customer edge routers are not mandatory at small sites. The gateways are scaled for the number of users at a site (probably from 100 to 10,000) and contain the security features, such as sharedsecret keys or digital certificates, and firewall facilities. The carrier’s managed network must have provider edge routers that are MPLS-equipped and core label switching routers.

The typical cable TV operating company does not share the same sense of service reliability as an incumbent telco. Next Generation Wireless Services Next generation wireless services deliver data transmission rates over the digital cellular (or PCS) networks that are similar to those at the low end of wireline capabilities. For IP-Centrex applications these wireless networks primarily serve mobile users and can be valuable as “fixed mode cellular,” providing local access redundancy for small offices.

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CENTREX or PBX: The Impact of Internet Protocol by John R. Abrahams, Mauro Lollo


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