- 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