Abstract: It is disclosed a method for protecting transmission of user data transmitted from a first to a second user network through a transport network. The user data have a maximum transmission rate. The method comprises: in the transport network, in a failure-free status, providing a first and a second path having an overall capacity equal to the maximum transmission rate; transmitting a first portion of user data along the first path, and a second portion of user data along the second path; at a network management server cooperating with the transport network, detecting a failure affecting transmission of the second portion; at the network management server, switching from the failure-free status to a failure status by operating the transport network so as to increase capacity of the first path to the maximum transmission rate; and at the first user network, transmitting the user data along the first path only.

Abstract: A fiber optic synchronous digital hierarchy telecommunication network provided with a protection system shared on the network is described, which comprises spans of pairs of optical fibers (N×2F) having network elements (N×2F-SDHNE) interposed therebetween, wherein the spares of pairs of optical fibers have a variable number N (N=1, 2, 3, . . . ) of pairs, and the network elements (N×2F-SDHNE) feature variable interconnection capability between said spans, so that several spans having number N of pairs of optical fiber even different can be connected to at least some of said network elements.

Abstract: A fiber optic synchronous digital hierarchy telecommunication network provided with a protection system shared on the network is described, which comprises spans of pairs of optical fibers (N×2F) having network elements (N×2F-SDHNE) interposed therebetween, wherein the spares of pairs of optical fibers have a variable number N (N=1, 2, 3, . . . ) of pairs, and the network elements (N×2F-SDHNE) feature variable interconnection capability between said spans, so that several spans having number N of pairs of optical fiber even different can be connected to at least some of said network elements.

Abstract: A method and device for improving flexibility and transparency at the nodes of synchronous hierarchy data transport networks is disclosed. The method uses, as a network flexibility point, a Multiplex Section Digital Cross Connect MS-DXC and SDH or WDM terminals for mere transport need. The MSOH, and possibly RSOH, sections of the STM-N frame of the high bit-rate SDH signal are handled by the MS digital cross connect in a manner equivalent to the payload section thus providing transparency for the payload and for the MSOH section, as well as, possibly, for the RSOH section too.

Abstract: A telecommunications network comprising a transmission layer and an Internet Protocol (IP) layer is described wherein the IP layer controls the transport layer through a management interface (NM) between the IP layer and the transport one that controls the configuration of the transport network itself: the IP layer acts as a client and the transport layer acts as an server.

Abstract: A fiber optic synchronous digital hierarchy telecommunication network provided with a protection system shared on the network is described, which comprises spans of pairs of optical fibers (N×2F) having network elements (N×2F-SDHNE) interposed therebetween, wherein the spares of pairs of optical fibers have a variable number N (N=1, 2, 3, . . . ) of pairs, and the network elements (N×2F-SDHNE) feature variable interconnection capability between said spans, so that several spans having number N of pairs of optical fiber even different can be connected to at least some of said network elements.

Abstract: A fiber optic synchronous digital hierarchy telecommunication network provided with a protection system shared on the network is described, which comprises spans of pairs of optical fibers (N×2F) having network elements (N×2F-SDHNE) interposed therebetween, wherein the spares of pairs of optical fibers have a variable number N (N=1, 2, 3, . . . ) of pairs, and the network elements (N×2F-SDHNE) feature variable interconnection capability between said spans, so that several spans number N of pairs of optical fiber can be connected to at least some of said network elements.