Net to Net Technologies, Multiplexer, models:

12-Port E1 Access Multiplexer EAM2000-12	User Manual
12-Port SHDSL Access Multiplexer SAM2000G-12	User Manual
12-Port T1 Access Multiplexer TAM1500-12	User Manual
12-Port VoSHDSL Access Multiplexer SAM2000GV-12	User Manual
AAM8000	User Manual
EIM2000	User Manual
IAM144	User Manual
IP Broadband Loop Carrier 4000	Hardware Installation Manual
SAM1000	User Manual