Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
1998-07-31
2001-04-24
Cangialosi, Salvatore (Department: 2732)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S399000
Reexamination Certificate
active
06222844
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a frame relay interworking service control method with ATM network using a permanent virtual connection and, more particularly, to a frame relay interworking service control method with ATM network using a permanent virtual connection, whereby a frame relay subscriber's service information is registered in ATM exchange system, ATM exchange system inner path to registered the frame relay connection due to registering the frame relay connection to the registered subscriber is connected to PVC.
2. Description of the Prior Art
Generally, ATM exchange system houses a Link which supports 1.544 Mbps (T1), 2.048 Mbps (E1), 44.736 Mbps (DS3), which performs a frame relay interworking divided into a first step, a second step, a third step. In the first step, the frame relay subscriber information is registered through a system operator interface, in the second step, one more frame relay connection is registered to the registered frame relay subscriber, in the third step, there is set PVC for connecting ATM switch path between the registered frame relay connections or between the frame relay connection and ATM connection.
Such an ATM exchange system should ensure interoperation for the existing service, improve the efficiency of ATM network by maintaining the form which flexibly accommodates the existing service.
In prior frame relay service form, there is a method which uses a frame relay switch supports a frame relay protocol. The ATM exchange system and interworking method is that the frame relay terminal or network should maintain a terminal adapter or ATM interworking function including a recognizable signal protocol at the ATM exchange system.
Accordingly, it is problematic that there is possible the connection to ATM exchange system in the case that frame relay subscriber should keep an extra apparatus for ATM interworking function.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a frame relay interworking service control method with ATM network using a permanent virtual connection, whereby the ATM exchange system directly performs the frame relay interworking function, manages the frame relay subscriber and connection information required to interworking, there can be connected to the ATM exchange system without an extra apparatus by connecting both terminals due to using ATM PVC.
In order to accomplish the above object, the present invention provides a frame relay interworking service control method using a permanent virtual connection, which comprises:
a frame relay subscriber information registration process of verifying a time slot usage state upon receiving a frame relay subscriber registration requirement through a system operator interface, computing an access rate, setting a registered subscriber information to FCIM, and outputting a normal/abnormal result to a frame relay subscriber registration process to a system console; a frame relay subscriber connection registration process of determining whether CIR (Committed Information Rate) for a connection registration in the subscriber is permitted or not upon receiving the frame relay subscriber registration requirement through the system operator interface, generating ATM connection identifier (VPI/VCI) corresponded to the frame relay connection, computing PCR (Peak Cell Rate) corresponded to CIR, Bc (Committed Burst Size), Be (Excess Burst Size) for translating a frame relay traffic and ATM traffic, setting a registered frame relay connection information to FCIM (Frame Relay Interface Controller), outputting a normal/abnormal result to a frame relay connection registration process to a system console; and a PVC interworking process of retrieving a frame relay connection information table by means of the VPI/VCI appointed when interworking PVC (Permanent Virtual Circuit), verifying a compatibility of the interworking required PVC parameter and the frame relay connection, interworking a connection between the registered frame relay subscribers or a connection between the frame relay subscriber and ATM subscriber.
REFERENCES:
patent: 5490140 (1996-02-01), Abensour et al.
patent: 5490141 (1996-02-01), Lai et al.
patent: 5521914 (1996-05-01), Mavraganis et al.
patent: 5627836 (1997-05-01), Conoscenti et al.
patent: 5802052 (1998-09-01), Venkataraman
patent: 5933607 (1999-08-01), Tate et al.
patent: 6137798 (2000-10-01), Nishihara et al.
Han Mi Sook
Joo Seong Soon
Oh Moon Kyun
Antonelli Terry Stout & Kraus LLP
Cangialosi Salvatore
Electronics and Telecommunications Research Institute
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