SX-200 General Information Guide

Power Supply

All power for the SFT unit is provided from the -48 Vbat source on the system. A source of -12 V powers the electronic circuitry on the card. This supply is derived from the -48 V input and powers all the SFT circuitry except the transfer relays. The relays are powered by a transistor-regulated -41V source, also derived from the -48 Vbat input. Thus, in the event of Vbat varying between the standard -42.5 V to -56.5 V, the current drain remains constant.

Transfer Relays

Each circuit in the SFT uses a four form C relay to transfer between normal and SFT modes of operation.

Loop Detector

When a transfer relay enters SFT mode, the loop detector connects in series with the loop between the extension and CO trunk facility. This circuit prevents the extension from returning to normal operating mode before an SFT mode call is completed. When the SFT mode call is completed, the extension is returned to normal operating mode.

SFT Control Leads

The transfer control sensor on the SFT senses a loop closure across the SFT and SFT return (SFTR) leads. When a loop closure is sensed, the power to the relays is removed, the relays are released, and all circuits enter the transferred state.

Power Consumption

The total current drain for the SFT is typically 80 mA.

Power Dissipation (watts)

Power Supply

TYP. (Watts)

TYP+20%

 

 

 

-48Vbat

3.18

3.81

 

 

 

@Vbat=-56 V

3.71

4.45

 

 

 

62

Revision A

50003510

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Mitel SX-2000, sx-200 SX-200 General Information Guide Power Supply, Transfer Relays, Loop Detector, SFT Control Leads

sx-200, SX-2000 specifications

Mitel SX-2000 is a versatile telecommunications system designed to cater to the communication needs of both large enterprises and smaller organizations. Known for its scalability and robust features, the SX-2000 offers a comprehensive solution for voice communications, making it a preferred choice in various sectors including healthcare, education, and corporate environments.

One of the distinguishing characteristics of the Mitel SX-2000 is its modular architecture. This design allows organizations to expand their system as needed, adding components such as additional trunk lines, user extensions, and various telephony features without a complete overhaul of their existing infrastructure. This adaptability is a significant advantage for businesses anticipating future growth or evolving needs.

The SX-2000 supports a diverse range of telephony protocols and technologies, including traditional analog and digital interfaces, as well as Voice over IP (VoIP). This flexibility enables seamless integration with existing equipment and the incorporation of modern communication technologies. It supports both TDM and IP technology, allowing organizations to bridge their legacy systems with new VoIP solutions, providing a cost-effective avenue for upgrades.

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In terms of user experience, the system offers a variety of end-user devices, including digital and IP phones, which come equipped with intuitive interfaces. These devices offer features like programmable keys, speakerphone capabilities, and support for unified communications, allowing users to manage their calls effectively.

Security is a significant aspect of any telecommunications system, and Mitel has incorporated layers of security protocols in the SX-2000. This includes encryption for VoIP calls and secure access controls to safeguard sensitive communications.

In summary, the Mitel SX-2000 is a robust telecommunications solution that provides extensive flexibility, scalability, and advanced features. Its ability to integrate with various technologies and support a wide range of user needs makes it an ideal choice for organizations looking to enhance their communication infrastructure. With ongoing advancements in telecommunications technology, the SX-2000 remains a relevant and powerful tool for effective communication.