KR100399418B1 - The Remote Media Gateway System of ATM UNI optical STM-1 interface - Google Patents

Abstract

The present invention focuses on general ATM interface functions such as frame relay matching, ATM adaptation layer (AAL) transmission, and circuit emulation matching in a public switched telephone network (PSTN), and the ATM user network interface is matched to an ATM host switch over a high-speed ATM link. A remote media gateway system according to the ATM user network interface optical signal processing management-1 matching, wherein the ATM switch and the telecommunication service are provided for telecommunication service during the PSTN exchange.

The present invention provides a media gateway system for concentrating general asynchronous transmission mode interface functions such as frame relay matching, ATM adaptive layer 1 trunking, ATM adaptive layer 2 trunking, and circuit emulation matching. An ATM switching subsystem for ATM matching and switching processing data collected from the media gateway system through a user network interface / network network interface and a signal processing management link; And a control server subsystem for controlling a signal switched from the ATM switching subsystem through a signal processing management link.

Description

AMT User Network Interface Optical Signal Processing Management Matched Remote Media Gateway System {The Remote Media Gateway System of ATM UNI optical STM-1 interface}

The present invention relates to a remote media gateway system of an ATM user network interface optical signal processing management matching, and more particularly, to frame relay matching, ATM adaptation layer (AAL) transmission, and circuit emulation matching of a public switched telephone network (PSTN). ATM user network interface that converges ATM interface function and connects to ATM host exchange through high-speed ATM link in accordance with ATM user network interface matching, so that telecommunication service is available during the switching period between the ATM switch and the public switched telephone network (PSTN). A remote media gateway system for optical signal processing management-1 matching.

As shown in FIG. 1, a public switched telephone network (PSTN) providing multiple services such as data, voice, and video data of a conventional public switched telephone network (PSTN) subscriber is mutually associated with an access switching network module (ASNM). An Interconnection Switching Network Module (ISNM) performs an ATM Switch Public Module (SFM) function, and an Intermodule Switching Network Module (ISNM) is connected between an Access Switching Network Module (ASNM) and an Interconnection Switching Network Module (ISNM). Each module must be installed in the same rack, using 234.747 Mbps with different PECL mating using a high-speed twisted cable.

An ATM subscriber matching module (AIM), which is a service block, performs digital signal level DS1, E1, DS3, signal processing management STM-1, STM-4 subscriber matching, and is connected to the access switching network module (ASNM). IMI).

FCIM performs DS1 / E1 frame relay and line substitute matching function and is connected to the access switching network module (ASNM) and the mutual module interface (IMI).

The HFCM performs a frame relay and line substitute matching function and is connected to the access switching network module (ASNM) and an intermodule interface (IMI).

The TIWM performs interworking / ATM adaptation layer (ALL1) trunking matching function with the N-ISDN network and is connected to the access switching network module (ASNM) and the intermodule interface (IMI).

ASCM and OMCM perform system operation maintenance control and call admission control and are connected to the access switching network module (ASNM) and an intermodule interface (IMI).

An NSM is connected between the access switching network module (ASNM) and the interconnect switching network module (ISNM).

Therefore, as described above, the general asynchronous transmission mode interface (NON-ATM) functions such as frame relay matching, ATM adaptation layer 1 (ALL1) trunking, ATM adaptation layer 2 (ALL2) trunking, and circuit emulation matching of a conventional public switched telephone network (PSTN) are performed. The ATM interface subscriber matching module (AIM) and the ATM switch fabric module (SFM), an ATM exchanger for converging networks, require a high-speed communication. Flex (AIM) and ATM Switch Fabric Modules (SFM) must be implemented.

Therefore, the switching capacity of the ATM switch is sufficient, but there is a problem in that the ATM switch needs to be reinstalled because it limits the expansion of the capacity of the existing PSTN matching subscriber.

In addition, the ATM switch side has a problem that causes a cost increase because it needs to use a cable to a long distance when communicating with the PSTN switch side through the existing PSTN matching subscriber.

Accordingly, an object of the present invention is to provide a media gateway system that aggregates general asynchronous transmission mode interface functions such as frame relay matching, ATM adaptive layer 1 trunking, ATM adaptive layer 2 trunking, and circuit emulation matching in a public switched telephone network. By transmitting to the ATM host exchange through the signaling management block link, it is possible to provide telecommunication service at the public switched telephone side, thereby reducing the cost of replacing the use of copper during the ATM switch and PSTN exchange.

Another object of the present invention is to provide the media gateway system at the ATM host exchange side to expand the limited capacity of the low speed ATM subscriber and the public switched telephone network (PSTN) matching function subscriber at the ATM switch.

In order to realize the above object, the present invention provides general asynchronous transmission mode interface functions such as frame relay matching, ATM adaptive layer 1 trunking, ATM adaptive layer 2 trunking, and circuit emulation matching. An aggregated media gateway system; An ATM switching subsystem for ATM matching and switching processing data collected from the media gateway system through a user network interface / network network interface and a signal processing management link; And a control server subsystem for controlling a signal switched from the ATM switching subsystem through a signal processing management link.

1 is a block diagram of signal processing management-1 matching with a conventional ATM user network interface.

2 is a control block diagram of a remote media gateway system of the present invention asynchronous transmission mode user network interface optical signal management processing-1 matching;

Figure 3 is a detailed block diagram of the remote media gateway system of the present invention.

* Explanation of symbols for the main parts of the drawings *

MGM; Media gateway module MGS; Media gateway system

ASS; ATM switching subsystem AIM; ATM Inverse Multiplex

SFM; ATM switching fabric module CSS; Control server subsystem

MMCH; Media gateway control hardware block

STM; Signal Processing Management AATH; AAL2 Trunking Hardware Blocks

NTIH; N-IDSN Trunking Hardware Blocks

CEIH; Circuit Emulation Interface Hardware Blocks

FRIH; Frame Relay Interface Hardware Blocks

MCIH; Medium Speed Emulation Interface Hardware Blocks

SB; Low Voltage Difference Signal Serial Bus

SCC; Serial communication channel DCS; Redundancy Control Signal

UNI / NNI; User Network Interface / Network Network Interface

Hereinafter, described in detail with reference to the accompanying drawings, preferred embodiments of the present invention.

FIG. 2 is a control block diagram of a remote media gateway system of the asynchronous transmission mode user network interface optical synchronous transmission mode-1 matching of the present invention, and FIG. 3 is a detailed block diagram of the remote media gateway system of the present invention. General asynchronous transfer mode (NON-ATM) interface functions such as frame relay matching (FRI), ATM adaptation layer 1 (AAL1) trunking, ATM adaptation layer 2 (AAL2) trunking, and circuit emulation matching. A media gateway system (MGS) that aggregates the data; ATM inverse multiplex (AIM) for ATM matching and switching processing of data collected from the media gateway system (MGS) through a user network interface (UNI) / network network interface (NNI) and a signal processing management (STM-1) link ) An ATM switching subsystem (ASS) comprising an ATM switch fabric module (SFM), which is an ATM switch; A control server subsystem (CCS) consisting of a multimedia personal module (MPM) and a workstation module (WSW) for controlling and processing a signal switched from the ATM switching subsystem (ASS) via a signal processing management (STM-1) link. It is made up of.

The media gateway system (MGS) is a media gateway module control hardware block (MMCH-A) (MMCH-A) which transmits and receives a serial communication channel (SCC) and a redundant control signal (DCS) to each other, providing an ATM network interface with a host ATM switch. B); A service block providing various application interfaces for transmitting signals to the media gateway module control hardware block (MMCH-1) (MMCH-B) and a low voltage difference signal (LVDS) serial bus (SB-A) (SB-B); ; The media gateway module (MGM) is configured as a stand alone call control server (SCS) that performs a call control function alone.

The service block includes an ATM adaptation layer 2 trunking hardware block (AATH) that provides an ATM adaptation layer 2 trunking function; An N-ISDN interworking hardware block (NTIH) for providing N-ISDN network interworking function; DS1 / E1 structured. A circuit emulation interface hardware block (CEIH) that provides an unstructured circuit emulation matching function; A frame relay interface hardware block (FRIH) that provides DS1 / E1 channelized / non-channelized frame relay matching; It consists of a mid-circuit emulation interface hardware block (MCIH) that provides DS3 unstructured circuit emulation matching.

The present invention configured as described above is a frame relay matching (FRI) and ATM adaptation layer 1 (AAL1) of the public switched telephone network (PSTN) network for multi-service, such as data, voice, video data from the public switched telephone network (PSTN) subscriber TNC, ATM Adaptation Layer 2 (AAL2) trunking, and circuit emulation matching to transmit data signals to the Media Gateway System (MGS) through the normal asynchronous transfer mode (NON-ATM) interface.

A data signal transmitted to the media gateway system (MGS) is an ATM adaptation layer 2 trunking hardware block (AATH) providing an ATM adaptation layer 2 trunking function as a service block; An N-ISDN interworking hardware block (NTIH) for providing N-ISDN network interworking function; DS1 / E1 structured. A circuit emulation interface hardware block (CEIH) that provides an unstructured circuit emulation matching function; A frame relay interface hardware block (FRIH) that provides DS1 / E1 channelized / non-channelized frame relay matching; Media Gateway Modules that match data signals transmitted through medium-speed circuit emulation interface hardware blocks (MCIH) that provide DS3 unstructured circuit emulation matching to a low-voltage differential signal (LVDS) serial bus (SB) that consists of redundancy Multiplex cell traffic with a control hardware block (MMCH-A).

The cell traffic multiplexed data is transferred to the ATM inverse multiplex (ASS) of the ATM switching subsystem (ASS) through the optical signal management blocks (STM-1 to STM-4) links of the subscriber network interface (UNI) / network network interface (NNI). AIM).

In this case, in the media gateway system (MGS), an optical signal management block (STM-1 to subscriber network interface (UNI) / network network interface (NNI)) from the ATM inverse multiplex (AIM) of the ATM switching subsystem (ASS). The cell traffic received through the STM-4) link is demultiplexed into the media gateway module control hardware block (MMCH-A) and distributed to the service block.

The media gateway module control hardware block (MMCH-A) is an ATM layer function and signal processing function, an operation preservation, a network management interface function, and a standby exclusive call control server for a ATM switching network side link. SCS) function and performs traffic control function by application interface port.

The ATM inverse multiplex (AIM) transmits and transmits the transmitted data back to the ATM switching fabric (SFM), and then transfers the switched data to the ATM inverse multiplex (AIM).

The ATM inverse multiplex (AIM) is to transmit to the host ATM switch via the optical signal management block (STM-1) of the subscriber network interface (UNI) / network network interface (NNI).

By configuring the media gateway system (MGS) on the PSTN switch side, the telecommunication service is provided to the optical signal management block (STM-1) during the ATM switch and the PSTN exchange period. This will replace the use of CABLE during the PSTN switch and ATM exchange.

Meanwhile, when the media gateway subsystem (MGS) is intermittently operated, a LAN is matched to the media gateway module control hardware block (MMCH) to perform call processing and maintenance functions, and a plurality of host ATM switches are used. Capacity Expansion with Media Gateway System (MGS) Installation of an ATM Physical Layer Card for Connection with Host ATM Switcher and ATM Network Matching and External Control Server Subsystem (CSS) One Signal Processing Management (STM-1) Optical Link By providing redundant service, the media gateway system (MGS) can be remotely operated at the public switched telephone network (PSTN) exchange side, thereby expanding the capacity of the low speed ATM subscriber and the public switched telephone network (PSTN) compliant subscriber.

As described above, the present invention relates to a user network interface signal matching for a media gateway system that aggregates general asynchronous transmission mode interface functions such as frame relay matching, ATM adaptation layer 1 trunking, ATM adaptation layer 2 trunking, and circuit emulation matching in a public switched telephone network. By providing a remote communication service at the public switched telephone to transmit to the ATM host exchange through the optical signal management block link, the media gateway can be used to reduce costs by replacing the use of copper lines during the ATM exchange and the PSTN exchange. When the system is configured on the host ATM switch side, the capacity of the subscriber to the public switched telephone network matching service can be extended to the media gateway per signal processing management to 512 signal processing management ports.

Claims (3)

A media gateway system that aggregates general, asynchronous transmission mode interface functions such as frame relay matching, ATM adaptation layer 1 trunking, ATM adaptation layer 2 trunking, and circuit emulation matching; An ATM switching subsystem for ATM matching and switching processing data collected from the media gateway system through a user network interface / network network interface and a signal processing management link; And a control server subsystem for controlling a signal switched from said ATM switching subsystem via a signal processing management link. The media gateway module control hardware block (MMCH-A) according to claim 1, wherein the media gateway system transmits and receives a serial communication channel (SCC) and a duplicate control signal (DCS) to each other providing an ATM network interface with a host ATM switch. (MMCH-B); A service block providing various application interfaces for transmitting signals to the media gateway module control hardware block (MMCH-1) (MMCH-B) and a low voltage difference signal (LVDS) serial bus (SB-A) (SB-B); ; Remote media gateway of the ATM user network interface optical signal processing management matching, characterized in that the media gateway module (MGM) configured as a stand alone call control server (SCS) that performs a call control function alone system. 2. The media gateway system of claim 1, wherein the media gateway system is configured to connect to a host ATM switch side to extend the capacity of the low speed ATM subscriber and the public switched telephone network matching function subscriber to 512 signal processing management blocks per signal processing management block. The remote media gateway system of the ATM user network interface optical signal processing management matching.