Description
The AudioCodes SmartWORKS™ LD2409-EH 24-Port Telephony Card delivers high-density analog call recording, monitoring, and line termination for enterprise and call-center environments. Designed for flexibility, it supports both passive and terminate modes, enabling deployment anywhere along the analog chain—between CO and PBX, PBX and phones, or direct line termination for interactive applications.
This Next-Generation analog blade features programmable voltage thresholds, polarity reversal detection, built-in voltage monitoring, and extensive CODEC options, ensuring reliable performance across global analog networks. With support for up to 512 channels per system, this 24-port LD2409-EH is ideal for scaling multi-line recording and telephony solutions.
Engineered for versatility and durability, the LD series integrates seamlessly with the SmartWORKS™ API, providing advanced voice processing, tone detection, DTMF/MF support, echo cancellation, automatic gain/volume control, media streaming, and full-duplex recording—making it a proven platform for mission-critical telephony applications.
| Category | Specification |
|---|---|
| Ports / Density | 24 analog ports (LD2409 series) |
| Supported Environments | Passive (Loop Start / Ground Start), Terminate (Loop Start) |
| Tap Points | CO–PBX, CO–Phone, PBX–Phone, Direct Termination |
| Voltage Detection | Two programmable thresholds; −61V to +61V (±2V accuracy) |
| Polarity Reversal Detection | Supported |
| Impedance (Passive) | 18 kΩ high impedance |
| Impedance (Terminate Mode) | Selectable (FCC / EU / China / Australia) |
| Ring Detection | 30 Vrms min, 16–68 Hz |
| REN | < 0.5 |
| Echo Return Loss | 28 dB ±3 dB @ 1400 Hz |
| Receive Range | −68 dBm to +3 dBm |
| Gain Control | Input: +24 to −50 dB; Output: +24 to −50 dB |
| Frequency Response | 300 Hz – 3400 Hz (±3 dB) |
| Telephony Connectors | RJ-21x for LD1609/LD2409 series |
| CODEC Support | G.723.1, G.729A, GSM 6.10, Microsoft GSM, G.726, μ-law / A-law (G.711), PCM 8/16-bit |
| Voice Processing | Caller ID (V.23/Bell 202), DTMF/MF detection, AGC, AVC, echo cancellation, CPM, stereo recording |
| Tone Detection / Generation | DTMF 0–9, *, #, A–D; MF (R1/R2); programmable tones |
| API / SDK | Native SmartWORKS™ API |
| Max Blades Per System | 16 |
| Max Channels Per System | Up to 512 |
| Bus Interface | PCI 2.2 or PCI Express (full size) |
| Operating Systems | Windows XP / 2003 / 2008 (32-bit), Windows 64-bit (planned), Linux (variants) |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | −20°C to +85°C |
| Humidity | 8%–80% non-condensing |
| Power (PCI) | +3.3VDC 1.5A, +12VDC 220mA (max 7.6W) |
| Certifications | EN60950, IEC60950, UL60950, FCC Part 15, EN55022, EN55024 |
| Part Number | 910-0701-003 (LD2409-EH) |
Payment & Security
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Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
Building a Complete AV System?
This product is rarely deployed alone. It’s typically part of a fully integrated AV system. AVENDOR designs, integrates, and supports end-to-end environments—from single rooms to enterprise-wide deployments.
- System Design & Engineering
- Installation & Integration
- Programming & Ongoing Support
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