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- In Stock: 3
- Manufacturer: Avaya Lucent
- Model or Part: TN793B
- Condition: Refurbished
- Weight: 8.00lb
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Item Condition
New - Sealed or Open Box ConditionExcellent - Almost-New, Missing Original Packaging
Refurbished - Seller Refurbished, Good Condition, Previously Used Item
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Avaya Lucent TN793B 24-Port Analog Circuit Board
This high-performance analog circuit board from Avaya Lucent is engineered to deliver reliable voice and data connectivity for a wide range of telecommunication systems. Designed with 24 discrete line ports, the TN793B supports both traditional POTS lines and modern VoIP gateways, making it ideal for small to medium business environments that require scalable and cost-effective analog interfaces.
Key Features
- 24 independent analog line inputs/outputs with low noise circuitry
- Integrated protection against surges and static discharge
- Compact 4x6 inch footprint for easy rack or panel mounting
- Compatible with Avaya Lucent PBX, IP phones, and third-party gateways
- Low power consumption (under 5 watts) to reduce operating costs
Technical Specifications
- Voltage rating: 48 VDC input, 0-48 V line support
- Current capacity: 1 A per port maximum
- Signal integrity: High fidelity analog processing with minimal distortion
- Temperature range: -40 to 85 degrees Celsius
- Dimensions: 4.0 inches by 6.0 inches, thickness 0.5 inch
- Weight: 1.2 pounds
- Compliance: FCC Class B, CE marked
Applications
- Voice over IP (VoIP) gateways that require analog line termination
- PBX systems needing additional analog ports for legacy devices
- Data centers integrating analog sensors or control panels with digital networks
- Industrial automation where analog signals must be converted to digital formats
- Telecommunications closets requiring a compact, low-power solution
The TN793B offers an economical and dependable way to bridge analog and digital worlds. Its robust design ensures uptime while its small form factor keeps installation hassle-free. Upgrade your infrastructure with this versatile 24-port board and experience seamless connectivity for all your analog needs.

