LE89010QVCT

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Modern communications systems rely heavily on high speed electronic switches and devices. The LE89010QVCT, from AT&T Microelectronics, is one such device. This application discusses the LE89010QVCT, including its application field and working principle.

Application Field

The LE89010QVCT is an 8-bit programmable Communication Interface Unit (CIU). It is designed to switch digital information between various voice and data communications networks. It can be used in a variety of applications, including:

• Telephone switching systems
• Digital PBX systems
• DS-3 and DS-3/E transport systems
• ISDN (Integrated Services Digital Network) systems
• Synchronous Optical Network (SONET) systems
• Broadband digital networks
• Video-on-demand networks
• High-speed Ethernet systems

The LE89010QVCT can switch between different digital and analog formats, including: EIA-232, EIA-422, EIA-530, H.110, H.221, V.24, V.35, and X.21. It also supports time-division multiplexing (TDM) and statistical multiplexing (SM) schemes.

The LE89010QVCT is available in three different variations: the LE89010QVCT-00, the LE89010QVCT-05 and the LE89010QVCT-10. These variations differ in the number of programmable ports, with the LE89010QVCT-10 providing the most functionality.

Working Principle

The LE89010QVCT consists of a programmable port switching matrix and a controller. The controller provides the capability to set up and maintain the switching matrix, as well as to monitor system status.

The main components of the LE89010QVCT are the :

• Port Switching Matrix
  • Programmable port switching matrix
  • 16k x 8 bit memory
• Controller
  • 80C88/V25 processor
  • 128K bit RAM
• System Connection Interface
  • Parallel system connection
  • Serial system connection
  • Time-division multiplexed connection
• Control Port
  • 16-bit intel 80C88/V25 microcontroller
  • Communications port

The LE89010QVCT uses a totally programmable port switching matrix to route digital signals between any of its available ports. The switching matrix is controlled by the controller and can be programmed by the operator via its I/O ports or through an external microcontroller.

The LE89010QVCT is designed to perform various external commands, such as selecting ports, setting up a call and clearing a call. The external commands are received by the control port, which is connected to an external microcontroller. This microcontroller can be programmed to perform a variety of switching functions, such as group dialing, outgoing and incoming call forwarding, and private number delivery. The microcontroller can also be used to control system wide parameters such as expanding the number of ports in the matrix.

The LE89010QVCT also includes a system connection interface for connecting to external systems, such as PBXs and ISDNs. The system connection interface provides several serial and parallel ports, as well as supporting a TDM format.

The LE89010QVCT is a versatile switch that can be used for a variety of voice and data communications applications. It is capable of switching digital information between different analogue and digital formats on up to 10 ports. The port switching matrix is programmable and can be controlled by an external microcontroller. The system connection interface supports serial and parallel connections, as well as TDM formats.

The specific data is subject to PDF, and the above content is for reference