Nice Logger is a call recording system that records both sides of a full-duplex telephone conversation (log) and stores it for future replay. It is used mostly in call centers and other applications where having a record of conversations are important. See www.nice.com/products/multimedia/nicelog.php .
Nice Logger supports many types of telephony cards and interfaces. The most commonly used are T1 and E1. DS1 is the layer 2 name for T1 telephony connections. It is a time division multiplexed digital stream of 24 voice circuits.
This was first published in September 2005