Name: 8-Port Direct Inward Dial Trunk Circuit
Brand: Avaya Lucent
Price: 57.95 USD
Availability: InStock

Avaya Lucent TN753 8-Port Direct Inward Dial Trunk Circuit

The Avaya Lucent TN753 8-Port Direct Inward Dial (DID) Trunk Circuit provides a reliable and scalable solution for connecting multiple inbound telephone lines directly to a PBX or VoIP gateway. Designed for enterprise environments, this compact modul... Read More

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$57.95

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In Stock: 9
Manufacturer: Avaya Lucent
Model or Part: TN753
Condition: Refurbished
Weight: 9.00lb
Dimensions: 15.00in x 12.00in x 10.00in

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Product Information

Item Condition

New - Sealed or Open Box Condition
Excellent - Almost-New, Missing Original Packaging
Refurbished - Seller Refurbished, Good Condition, Previously Used Item

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Description

Overview
The Avaya Lucent TN753 8-Port Direct Inward Dial (DID) Trunk Circuit provides a reliable and scalable solution for connecting multiple inbound telephone lines directly to a PBX or VoIP gateway. Designed for enterprise environments, this compact module supports eight simultaneous DID channels, enabling efficient call routing, reduced call handling time, and improved customer service. Its robust construction and proven Avaya technology ensure high availability and seamless integration with existing telephony infrastructures.

Key Features

Eight independent DID ports for direct inbound call access
Plug-and-play installation with standard RJ-11 connectors
Supports both analog and digital line types
Built-in line supervision and alarm detection
Compatible with Avaya, Cisco, and most SIP-based PBX systems
Low power consumption and compact 1U rack-mount form factor

Technical Specifications

Model/Part Number: TN753
Manufacturer: Avaya Lucent
Number of Ports: 8 DID ports
Line Interface: RJ-11 (2 wire) per port
Impedance: 600 ohms typical
Operating Voltage: 48 VDC (optional 24 VDC with adapter)
Power Consumption: less than 5 watts
Environmental: Operating temperature 0 to 40 degrees C, storage temperature -20 to 70 degrees C
Dimensions: 1U height, 19 inch rack width
Compliance: CE, FCC Part 15

Applications
The TN753 is ideal for call centers, corporate headquarters, and service desks that require multiple direct inbound numbers for departments, sales teams, or support lines. It is also well suited for small to medium businesses expanding their telephony capacity, as well as for integration into hosted VoIP solutions where reliable DID provisioning is critical. By consolidating eight inbound lines into a single, easy-to-manage module, organizations can streamline call handling, improve response times, and enhance overall communication efficiency.