Name: AT&T Definity Packet Data Line
Brand: Avaya Lucent
Price: 112.95 USD
Availability: InStock

Avaya Lucent TN553 AT&T Definity Packet Data Line

Overview The Avaya Lucent TN553, also known as the AT&T Definity Packet Data Line, is a high-performance interface module designed to deliver reliable packet data services over legacy T1/E1 circuits. Engineered for carrier and enterprise environments... Read More

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$112.95

In Stock: 1
Manufacturer: Avaya Lucent
Model or Part: TN553
Condition: Refurbished
Weight: 6.00lb

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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 TN553, also known as the AT&T Definity Packet Data Line, is a high-performance interface module designed to deliver reliable packet data services over legacy T1/E1 circuits. Engineered for carrier and enterprise environments, this module enables seamless integration of voice and data traffic, providing a cost-effective solution for customers who need to extend IP connectivity without upgrading to fiber. Its compact form factor fits into standard Definity chassis, allowing quick deployment and easy maintenance.

Key Features

Supports both T1 (North America) and E1 (International) line rates
Full duplex operation with up to 1.544 Mbps (T1) or 2.048 Mbps (E1) throughput
Integrated error correction and CRC checking for high data integrity
Plug-and-play installation with hot-swap capability
Compatibility with AT&T Definity switching platforms and third-party equipment that adheres to standard signaling
Low power consumption and built-in thermal management

Technical Specifications

Model/Part Number: TN553
Manufacturer: Avaya Lucent
Interface Type: Packet Data Line (PDSL)
Supported Line Types: T1 (PRI) and E1 (PRI)
Maximum Data Rate: 1.544 Mbps (T1) / 2.048 Mbps (E1)
Signaling: ISDN PRI, CAS, or custom packet framing
Power Supply: 48 VDC optional, draws less than 5 watts
Operating Temperature: 0 to 50 degrees Celsius
Dimensions: 1U rack-mountable, 19 inch width

Typical Applications

Extending IP data services to remote offices over existing T1/E1 circuits
Backbone connectivity for small to medium sized enterprises that require reliable packet transport
Integration of voice over IP (VoIP) with legacy PSTN lines in hybrid networks
Carrier grade service provisioning for broadband access, VPN, and MPLS over copper infrastructure
Disaster recovery links where fiber is unavailable or cost prohibitive

By leveraging the Avaya Lucent TN553, organizations can maximize the value of their existing T1/E1 investments while gaining the flexibility of modern packet-based communications. Its robust feature set and straightforward deployment make it an ideal choice for both new installations and upgrades to legacy networks.