Patent ID: 6647018
Filing Date: 2003-11-11
Classification: H04Q

Abstract:
Method for implementing ISDN user port status monitoring in a telecommunication system comprising a telephone exchange (LE) with a number of subscribers defined in it, a first access node (AN1), which is connected to the telephone exchange via a first V5 interface (V5), a second access node (AN2), which is connected to the first access node (AN1) via a second V5 interface (V5â€²), and subscriber terminal equipment (TE) connected to the second access node (AN2), the connection between the subscriber and the telephone exchange (LE) being set up by cascading the two V5 interfaces, in which method the user port states are monitored in the various network elements (LE, AN1, AN2) using a status engine, characterised in that all ISDN user port activation messages are transmitted through the status engine of the first access node (AN1) without changing its state when the current state of the status engine is other than the BLOCKED state.