Adtran ISU 512 ISDN Inverse Multiplexer

The Adran ISU 512 is a standalone ISDN service unit that connects data terminal equipment (DTE) to the ISDN network. The ISU 512 is specifically designed as a low-cost solution for applications such as video-conferencing, T-1 backup, LAN/WAN connectivity, and high-speed file transfer.



• Manufacturer: Adtran
• Manufacturer Part Number: 1202086L1
• Manufacturer Website Address: www.adtran.com
• Brand Name: Adtran
• Product Model: ISU 512
• Product Name: ISU 512 ISDN Inverse Multiplexer
• Product Type: Inverse Multiplexer
• Number of Data Channels: 8
• Interfaces/Ports: 4 x RJ-45 ISDN BRI (U) Network, 2 x RJ-45 Management, 1 x DB-25 DTE RS-530
• Data Transfer Rate: 56 Kbps to 512 Kbps ISDN BRI
• Dimensions: 2.5" Height x 7.9" Width x 10.5" Depth
• Weight (Approximate): 3.00 lb
• Package Contents:
• ISU 512 ISDN Inverse Multiplexer
• RS-366 Y Cable
• 4 x 7-Feet RJ45 Telephone Cables
• User Manual

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Standard Return Policy for Electronics:

The items must arrive at our warehouse within 30 days of purchase. You must return items in their original condition to qualify for a full refund. We will issue a partial refund of up to 70 percent if returned items have been opened, used, or returned late.
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* For your safety, some orders go through our loss prevention department. If we select your order for this process, we will immediately notify you that there may be up to a 3-day delay on your order.
** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.

Standard Shipping:

Our standard shipping method is ground shipping. You should receive your products within 5-10 business days from the day you order them.
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Expedited Shipping:

We offer Next Day, 2 Day, and 3 Day shipping for most items. Expedited shipping is not available for items being shipped to PO Boxes or APO/FPO destinations. For more information on this please view our Expedited Shipping page.
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