Name: 8-Port Central Office Trunk Card
Brand: Avaya Lucent
Price: 48.95 USD
Availability: InStock

Avaya Lucent TN747B 8-Port Central Office Trunk Card

Overview The Avaya Lucent TN747B 8-Port Central Office Trunk Card is a high-performance interface module designed for carrier-grade telephone switches and digital PBX systems. It provides reliable, low-latency connectivity for up to eight T1/E1 trunk... Read More

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In Stock: 25
Manufacturer: Avaya Lucent
Model or Part: TN747B
Condition: Refurbished
Weight: 8.00lb
Dimensions: 16.00in x 10.50in x 2.75in

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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

Some items drop ship from third party sellers.

Description

Overview
The Avaya Lucent TN747B 8-Port Central Office Trunk Card is a high-performance interface module designed for carrier-grade telephone switches and digital PBX systems. It provides reliable, low-latency connectivity for up to eight T1/E1 trunks, enabling service providers and large enterprises to expand voice capacity while maintaining crystal-clear call quality.

Key Features

Eight independent T1/E1 ports with full duplex operation
Supports both PRI and CAS signalling formats
Built-in line coding and framing for seamless integration
Hot-swap capable for zero-downtime maintenance
Robust error detection and correction mechanisms
Compact, rack-mountable design for space-constrained cabinets

Technical Specifications

Port type: T1 (North America) / E1 (International)
Data rate per port: 1.544 Mbps (T1) or 2.048 Mbps (E1)
Signalling: PRI, CAS, D channel data rates up to 64 kbps
Power consumption: max 30 watts
Operating temperature: 0 to 40 degrees Celsius
Humidity: 10 to 90 percent non-condensing
Dimensions: 1U rack height, 17.5 inches width, 8.5 inches depth
Compliance: FCC Part 68, CE, RoHS

Applications
The TN747B is ideal for:

Telecommunications carriers expanding trunk capacity in central offices
Large corporate campuses requiring reliable PRI connections for VoIP gateways
Contact centre environments that need high-density voice channels
Service providers offering hosted PBX or SIP trunking solutions
Any mission-critical voice network where uptime and call quality are paramount

By choosing the Avaya Lucent TN747B, organizations gain a scalable, dependable trunk solution that simplifies network architecture and reduces total cost of ownership while delivering the performance expected from a leading industry manufacturer.