- Digital Loggers direct T1 to USB audio recorder - Installs with a quick, simple connection between the PBX and Telco. Existing equipment is unaffected. No PBX programming required - The "T1 tapper" intercepts audio using a transparent Hi-Z connection. Bulky channel banks are not required - Data from two T1s can be combined in full-duplex (24 channel) mode - All common T1 formats are supported including: SF, ESF, B8Zs, AMI, Japanese CRC, FT1, etc. - USB plug-and-play operation with Windows 2003, 2008, Vista or XP DLPRI