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Adtran 1204004L1 ISDN Card for DSU IV ESP

Adtran 1204004L1 ISDN Card for DSU IV ESP
Adtran 1204004L1 ISDN Card for DSU IV ESP
Overview The Adtran 1204004L1 ISDN Card for DSU IV ESP is a high-performance interface module designed to deliver reliable Integrated Services Digital Network (ISDN) connectivity for enterprise and carrier environments. Engineered to fit into the DSU... Read More
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$520.95

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  • In Stock: 18
  • Manufacturer: Adtran
  • Model or Part: 1204004L1
  • Condition: Refurbished
  • Weight: 1.00lb
  • Dimensions: 9.25in x 4.63in x 2.00in
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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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Overview

The Adtran 1204004L1 ISDN Card for DSU IV ESP is a high-performance interface module designed to deliver reliable Integrated Services Digital Network (ISDN) connectivity for enterprise and carrier environments. Engineered to fit into the DSU IV ESP chassis, this card provides seamless BRI and PRI support, enabling voice, data, and video services over a single digital line. Its robust design and proven Adtran technology make it an ideal choice for organizations seeking to upgrade legacy circuits or implement new ISDN solutions with minimal disruption.

Key Features

  • Supports both Basic Rate Interface (BRI) and Primary Rate Interface (PRI) configurations
  • Full duplex operation with up to 2 Mbps data rate per channel
  • Integrated error correction and framing for high reliability
  • Plug-in form factor compatible with DSU IV ESP chassis
  • Low power consumption and fanless design for quiet operation
  • Compliant with ITU-T Q.921 and Q.931 signaling standards

Technical Specifications

  • Model/Part Number: 1204004L1
  • Interface: 2-wire BRI or 30-wire PRI (T1/E1) options
  • Clock Rate: 2.048 Mbps (E1) or 1.544 Mbps (T1)
  • Operating Temperature: 0 to 40 deg C
  • Power Supply: 12 VDC, 2 A max
  • Dimensions: 4.2 in (H) x 5.5 in (W) x 1.0 in (D)
  • Connector Type: RJ45 for BRI, RJ48C for PRI

Applications

  • Enterprise voice and data networks requiring reliable ISDN trunks
  • Telecom service providers upgrading legacy ISDN infrastructure
  • Call center environments that need simultaneous voice channels
  • Video conferencing systems that rely on low-latency digital links
  • Backup connectivity for critical sites where redundancy is essential

By integrating the Adtran 1204004L1 ISDN Card into your DSU IV ESP, you gain a flexible, scalable solution that supports a wide range of digital communication needs while maintaining the high reliability that Adtran is known for.