For auction on ebay:
This is a used Wandel & Goltermann DS-1/Signaling Analyzer, Model DSA-15 (BN4528/03 - Software Version 3.03) in excellent condition. Comes with NiCd batteries, 1Mb SRAM Card, 115V/12Vdc Power Adapter. It is used as a T1/T3 Communications Test Set used for testing T1/T3 lines. Great price for a full-featured unit!
Check it out here:
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Good luck bidding!