Telephonic communications – Plural exchange network or interconnection
Patent
1997-03-26
2000-08-29
Hong, Harry S.
Telephonic communications
Plural exchange network or interconnection
379 15, 379269, H04M 700, H04M 322, H04M 300
Patent
active
06111944&
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an operation and maintenance system of a telephone network, and routing of information in the system, in particular.
2. Description of Related Art
In a telephone network, the most important task of the maintenance service of an exchange is to make sure that the exchange will function in failure situations, i.e. to ensure the call switching capability when one unit of the exchange fails. In a failure situation, a faulty unit is disconnected and replaced with a stand-by unit. Maintenance service also includes reporting of charging information, as well as compiling reports on traffic control, alarm and monitoring. The maintenance programs are concentrated in the operation and maintenance unit (OMU) of an operation and maintenance center (OMC) connected to the exchange, in which OMU the necessary files are also located. Operation and maintenance (OM) of various exchanges is thus concentrated in the areal operation and maintenance center (OMC), the task of which is to collect in a centralized manner in the maintenance center of the telephone operator the above-mentioned charging information provided by the operation and maintenance (OM) of the telephone exchanges located within the area, as well as reports on traffic control, alarm, and monitoring. In extensive systems comprising a plurality of areal exchanges, and exchanges connected to them, the management of areal operation and maintenance centers (OMC), and concentrated collecting of their service information in a centralized manner may be subjected to an operation and maintenance center acting as the master controller.
The operation and maintenance centers thus form a so-called OM network (Operation and Maintenance Network), in which each OMC is a network element, which is specialized in collecting and storing the data produced by single exchanges of the system situated below it in the hierarchy. The OMC does not post-process this data, but post-processing is carried out elsewhere, such as in a Network Management Center. Data transmission between different network elements, i.e. OMC's may be implemented via a packet switched data network, which is represented in FIG. 1 by a schematically depicted X.25 network, or via time-slots reserved from semi-permanently connected PCM circuits, or via a network using the common channel signalling system #7 in accordance with the CCITT standard.
FIG. 1 shows an example of an OM-network. At the top of the hierarchy, there is a Network Management Center, NMC, and below it a Main Operation and Maintenance Center functioning as the main controller, and connected to areal Operation and Maintenance Centers OMC. To the last-mentioned, single exchanges and switching centers and exchanges are connected. The main operation and maintenance center is in charge of supervising the entire OM network. It is connected to the network management center NMC e.g. via an OSI interface (Open System Interface) in accordance with the standard.
As appears from FIG. 2, the functions of the operation and maintenance are distributed in an exchange to several microcomputer units, the software located in which is loaded under the control of an operation and maintenance unit OMU. The microcomputer units include identical data management units DMU, which are named according to the dedicated tasks, e.g. charging management unit, performance management unit, traffic monitoring unit, fault control management unit. In addition, they include data communication units DCU, via which analog and digital connections are transferred to the network and from the network. A data communication unit DCU comprises a so-called I/O manager, an interface to an internal message bus of the OMC, and multichannel signalling terminals, as well as serial communication terminals, via which the linkage to the network connecting the exchanges takes place. The microcomputer units comprise mass memories, which may be e.g. hard disks or floppy disks. Messages within the OMC between different units are tr
REFERENCES:
patent: 5105420 (1992-04-01), Ardon et al.
patent: 5287535 (1994-02-01), Sakagawa et al.
patent: 5323384 (1994-06-01), Norwood et al.
patent: 5436957 (1995-07-01), McConnel
patent: 5583920 (1996-12-01), Wheeler, Jr.
patent: 5610910 (1997-03-01), Focsaneanu et al.
patent: 5652787 (1997-07-01), O'Kelley
Hong Harry S.
Nokia Telecommunications Oy
LandOfFree
Method for routing information in operations and maintenance net does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for routing information in operations and maintenance net, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for routing information in operations and maintenance net will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1256710