RDL Telephone Interfaces

Radio Design Labs' TX-TPS3A is a three-pair audio sending module compatible with RDL Format-A twisted pair products. Three line-level sources may be connected to the module, each using either the -10 dBV unbalanced RCA phono jack or the +4 ...

Radio Design Labs' ST-TC1 is intended to be connected to an on-site telephone system switching unit KSU. It is NOT intended to be connected directly to a telephone CO line. Connections from the ST-TC1 go into the telephone switching unit a ...