GW MST+DXC Use Notes

With the continuous enrichment of communication services, more and more users need to rent the network resources of telecom operators to carry out various business communication or set up a special network. China's accession to the WTO will further and deepen the introduction of competition mechanism, will not only lead to domestic emerging telecom operators and traditional operators of telecommunications competition, At the same time, it will cause competition with the corresponding business providers abroad, so in the provision of business and services to users, who provide more comprehensive business, more reliable quality, more secure service, who will have more competitive advantage, and more in the market competition in an invincible position.

The GW MST series integrated service reuse equipment developed by the Green Will Technology Development Co., Ltd. is designed for the needs of the major telecom operators and the emerging operators for the integrated access to a variety of services. This series of devices can access voice, data, RS232, v.24, RS485, v.35, 10M Ethernet services to 2M channels, business types and capacity can be flexibly configured. Equipped with the GW DXC series of digital crossover devices developed by the Green will company, this series of equipment can be a flexible, reliable and cost-effective solution for multiple business communications. GW MST+DXC's combination can be flexible network, smooth expansion, widely used in DDN access, mobile communications MSC Interconnection, MSC and BSC Interconnection, remote Data dedicated network, large enterprise internal broadband networking, remote data transmission and other occasions, applicable to telecommunications, finance, electricity, The integrated communication network of military and railway departments is a good solution for the access part of multiple service communication.

The combination of GW MST+DXC products mainly includes the integrated business multiplexing Equipment GW MST-A15, GW mst-b120, GW mst-d and multiple E1 digital crossover devices based on 64kbps, GW dxc-a8 and GW Dxc-a56.

GW MST-A15 Integrated Business multiplexing equipment: 19 1U chassis, single-plate structure, the motherboard left 15 slots to insert different business user interface card, 1 user interface card corresponding to the 1-way business, A15 full configured to plug into 15 user interface card, you can access 15 different user services to the 2M channel. In practical application, the type and quantity of user interface card can be configured according to the user's specific business, not limited by type and quantity. In addition, the device also has a timer upgrade function and power off the line protection function.

GW mst-b120 Integrated Services multiplexing equipment: 19 6U Chassis, the whole machine using the combination of Board and card structure, providing 4 2M or 120 64k user business. Each B120 device can insert 8 user board, each user board is equivalent to GW MST-A15 motherboard, the number and type of user interface card can be flexibly configured according to user's need. In addition, GW Mst-b120 also built a 256x256 digital crossover matrix and PDH optical transmission module, suitable for the Central Bureau, such as the need for high-volume business locations.

GW mst-d Data Service multiplexing equipment: Independent small chassis, the use of 1 standard E1 channels in the free time slot to provide users with v.24 interface, v.35 interface business, can be widely used in telecommunications data services, electricity, banks and other terminals of the transmission line, mainly for the transmission of monitoring information.

GW DXC-A8 Digital Crossover equipment: 19 1U Chassis, provides 256x256 form of the 64k time slot full crossover, can also achieve user time slot in multiple 2M circuit or a link of multiple 64k channel broadcast, with data protection, power off data will not lose the advantage of, The main clock can be selected on either line E1 timing. Usually the A8 is placed between the BTS of the mobile base station and the MST of the Mobile Switching center, and a small amount of the E1 signal is pooled into the E1 of the 1~2 road and transmitted to the Mobile switching center MSC via the backbone transmission network.

GW Dxc-a56 Digital cross-connect device: 19 3U chassis, dual power supply hot backup, machine plug-in structure, Backplane provides 14 interface card slots, full configuration can be plugged into 14 4xe1 interface Board, can achieve up to 56 direction of E1 between the 64k-based non-blocking cross-link, FE1 (partially E1) of multiple orientations can be synthesized into 1 or more standard E1 to save transmission resources. GW Dxc-a56 can be hung several GW MST equipment, in accordance with star, chain, tree and hybrid network, with flexible networking, smooth expansion capacity.

The following example illustrates the typical application of GW MST+DXC combination with the Unicom paging network solution. In response to China Unicom's use of its own optical fiber communication network to provide local circuit for Unicom letter paging, considering China Unicom as a major telecom operator in China, whether it is the interface type or the networking mode, we must meet and adapt to the development requirements of the middle and long term, in the scheme we use the GW MST+DXC classic combination, Not only meet the requirements of the Unicom paging business, but also solve the unicom billing, voice, unicom computer room monitoring, unicom to provide the community with DDN circuit needs.

In this scenario, the Central Center room CNET (base station equipment Controller) leads to paging 9.6K encoded data, v.24 interface to GW mst-b120, by GW mst-b120 equipment to E1 each time slot broadcast, with over connected transmission network to the remote base station and the remote GW MST-A15 equipment, through the GW MST-A15 equipment to the 2M corresponding time slot extraction, 9.6K encoded data to the V.24 interface to the transmitter, around the base station GW MST-A15 equipment through the E1 interface to connect each other. GW MST-A15 equipment with protection circuit, upstream equipment failure or power off will not affect downstream equipment. From the center room to the base station to use a total of more than 10 E1 channels, from the security and reliability aspects of each E1 connected 3~4 base station.

This scheme is economical and practical, not only satisfies the demand of unicom paging network, can also use the free time slot transmission monitoring business, at present, the GW MST+DXC combination of the typical solution has been successfully applied in Nanjing Unicom, Yangzhou unicom, Lianyungang unicom, Changzhou unicom, Huaiyin Unicom, such as Unicom's National Letter paging network construction, network operation stability, Reliable, get the unanimous approval of the customer.