Method for implementing ISDN user port status monitoring
AssigneeNokia Corporation
InventorsTimo Juntunen, Toivo Lallukka, Tiina Lehikoinen
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Abstract
The invention relates to a system and a method for implementing ISDN user port status monitoring in a network element transmitting messages in a cascaded V5 interface. In an embodiment of the invention, ISDN user port activation messages are transmitted unaltered through the message transmitting network element when the current state of the ports is other than the BLOCKED state consistent with the V5 definitions.
Claims9
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 (V5′), 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.
Telecommunication system for implementing ISDN user port status monitoring, said 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 (V5′), 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 system the local exchange, the first access node and the second access node comprise status engines for monitoring the ISDN user port states, characterised in that the status engine of the first access node (AN1) is designed to transmit ISDN user port activation messages without changing its state when the current state of the status engine is other than the BLOCKED state.
Dependencies are inferred from the claim text.