LD Series

Product Overview

SmartWORKS LD Series Next Generation Analog Passive/Active Card

Features Include:

  • Media Control - CODECS
  • Tone Detection / Generation
  • CallerID/FSK/DTMF/MF Detection
  • Activity / Silence Detectors
  • View More
Telephony LD Series Main Product Image
Telephony LD Series Product Image 2

Designed for analog networks, the SmartWORKS™ LD has both passive and terminate network interface capabilities. Featuring programmable voltage thresholds and loop reversal detection, the SmartWORKS™ LD is easily configured to accommodate variations across analog networks. This product is offered in 4, 8, 16 and 24 port versions, suitable for small to large offices and call centres.

Tap Environment

The LD series accommodates low to high density environments with 4, 8, 16, or 24 port boards. The SmartWORKS™ API supports a total of 512 channels per system. The tapping point can be anywhere on an analog line: between Central Office and PBX, Central Office and phones, or PBX and phones.

Terminate Environment

The LD series can be used to initiate as well as terminate calls. When configured as an interactive resource, phone lines can directly connect to and terminate on the LD boards. Standard ring detection is available.

World-Wide Analog Support

The SmartWORKS™ LD supports passive call recording on ground start and loop start analog networks. It has line terminating capabilities for loop start environments. Features such as programmable voltage thresholds, voltage detection, and polarity reversal are managed through the common SmartWORKS™ API. As a result, the SmartWORKS™ LD easily adapts to variations found on analog systems throughout the world.

Built-in Performance Monitoring

Built-in voltage detection allows SmartWORKS™ LD to distinguish a disruption of service if a cable is damaged or disconnected. This feature is unique in the industry and only available on the LD series.

4-24 Port Telephony Cards

Offers low to high density boards that are ideal for any analog environment.

On Demand Voltage Detection

Voltage values are reported with standard SmartWORKS™ API events to simplify application development.

Programmable Voltage Thresholds

Control voltage detection event reporting with ease by adjusting the board to the local analog environment.

Detects Polarity Reversal

Adapts to environments where Tip and Ring are reversed.

Minimum 18k Ohm Impedance

High impedance receivers record both sides of a call without interrupting service.

CODEC Support

SmartWORKS™ offers a large selection of voice CODECS (including G.723.1, G.729A and MS GSM)

Key Features:

  • Media Control - CODECS
  • Tone Detection / Generation
  • CallerID/FSK/DTMF/MF Detection
  • Activity / Silence Detectors
  • Switching (H.100)
  • Automatic Gain Control (AGC)
  • Automatic Volume Control (AVC)
  • Stereo Recording
  • Echo Cancellation
  • Call Progress Monitoring (CPM)
  • Full-duplex Channels
  • Media Streaming
  • Live Monitoring
  • Start/Stop Call Recording Triggers
  • Beep tone generation for passive mode

Data Sheets (PDF)

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LD Series Data Sheet

Technical Manuals (PDF)

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Quick Install Guide LD Series

Part Numbers



Analogue 16 port passive/terminate card, PCI-Express


Analogue 24 port passive/terminate card, PCI-Express


Analogue 8 port passive/terminate card, PCI-Express

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