T-DSL-ZISP

from Wikipedia, the free encyclopedia

T-DSL CISP (feed for Internet Service Provider (ISP)) means the regulated terms on which Internet service provider customers with T-DSL all connections of Deutsche Telekom to its network link (i. E. The traffic its network out ) can, by their network of regional nodes with the network of Telekom interconnect , which they that customer access to the Internet can offer.

Bitstream light

T-DSL CISP is a regulated DSL - wholesale and Internet providers in conjunction with T-DSL resale used all connections to offer access to the Internet from "one-stop" to end customers. From a functional point of view T-DSL CISP can be used with T-DSL resale lines so as IP - bitstream access be considered, but with significant from a regulatory perspective this product bundle of T-DSL resale line and T-DSL ZISP Features A real IP bitstream access is missing, as it is neither unbundled without a landline connection from Telekom, nor does it contain access to the end customer with individual quality parameters of the traffic flows (including provider-defined DSLAM switching profiles), so that the ISP does not have end customer Internet access with its own defined ones Properties can offer.

technology

With the help of T-DSL-ZISP, Internet service providers with their own IP platform can receive traffic from T-DSL customers. T-DSL-ZISP is the link required for this between the Deutsche Telekom concentration network and the ISP's Internet platforms. DSL traffic from around 7,000 DSLAM locations is bundled in a concentration network and transferred to broadband PoPs at 73 locations . The concentration network is ATM-based ; the traffic is routed via permanent virtual paths so that each local DSLAM is connected to a corresponding regional broadband remote access server (BRAS). From there, the ISP can take over the traffic via leased lines to its own IP backbone. The accesses are PDH and SDH based and have bit rates of 34, 155 and 622 Mbit / s and 2.5 Gbit / s. The T-DSL connection line (connection between the splitter and DSLAM) is not part of the T-DSL-ZISP.

The Internet service provider receives the traffic as an open L2TP tunnel so that the end customer's PPPoE sessions can be terminated at the ISP. From the end customer's point of view, there is a direct connection to the ISP, from where connections to servers and content on the Internet can be established. The authorization of a connection is in the hands of the ISP, and the ISP is completely free as to which services it offers to the end customer.

Alternatives for connecting T-DSL customers

T-DSL-ZISP is suitable for Internet service providers who already have a widely ramified IP backbone that extends into the vicinity of the broadband remote access server . You need not additionally to the additional service of Deutsche Telekom , the IP to -Transport route , draw what the telecom unregulated activities such as ISP gate and T-OC-DSL marketed to the access provider.

literature

  • Remco van der Velden: Competition and Cooperation on the German DSL Market - Economics, Technology and Regulation. Mohr Siebeck Verlag, Tübingen 2007, ISBN 3-16-149117-3

Web links