System and method for implementing terminal-to-terminal call connection between optical networks

Abstract

The invention discloses a system and method for realizing end-to-end call connection between optical networks. The method includes steps as follows: at least two control domains is set according with various equipment kinds and border node in ASON control domain is defined; intra-domain links is set for realizing call control of optical network system, operation topology diffusion, routing-transfer according with connection relationship between various control domains; intra-domain link including physical link linked directly between ASON control domains, at least one logical transmission interface set in transmission interface of border node connected with traditional optical network respectively and spaned at least traditional optical network control domain between ASON control domains, a logical link is formed by logical transmission interface partnership. The system and method can realize intelligent optical network spanning traditional optical network for completing end-to-end call connection establishment, and is beneficial to network convergence; operation route switch can be completed by call control if network failure occurs.

Description

technical field [0001] The present invention relates to the field of optical networks, in particular, a system for establishing an automatic switching optical network (ASON, Auto-Switch Optical Network, also known as an intelligent optical network) across a traditional optical network (OTN) to realize end-to-end call connection and method. Background technique [0002] Automatically switched optical network is an optical transport network that uses the control plane to complete automatic switching and connection control. It uses optical fiber as the physical transmission medium and consists of SDH (Synchronous Digital Hierarchy) and OTN (Optical Transmission Net, optical transport network) ) and other optical transmission systems constitute an intelligent optical transport network. The core of ASON is network intelligence, including signaling, routing and automatic discovery functions to realize intelligent network control functions. [0003] The automatic switching optica...

AI Technical Summary

Problems solved by technology

[0007] At this time, if the network management system initiates a call connection request from node A to node G in the intelligent control domain ZZ from the intelligent control domain AA, the correct service path cannot be calculated during the call connection establishment process, because the intelligent control domain The AA and the intelligent control domain ZZ span traditional optical network equipment. The extraction and distribution of physical links cannot be performed on traditional optical network equipment. In the process of establishing a call connection, it will fail due to the inability to obtain a complete service path.

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