Viking Electronics long loop adapter Provides 4 long line and off premise extension OPX capabilities for PABX and KSU analog stations, ISDN terminal adapters, channel banks, etc. Converts any four low talk battery boltage or weak ringing analog line into a standard 48V line with powerful 20Hz sine wave ring signal Compatible with pulse dialing, touch tone dialing, hook switch flash features, CPC signaling and Caller ID features Ground screw terminal allows for improved surge protection and as an earth ground reference for the regenerated lines Easy to install, requires no programming Convert four analog KSU/PABX stations to standard voltage OPX Provides 48 VDC talk battery Provides 20 HZ, 10 REN sine wave ringing Passes Caller ID information Passes hook switch flash DTMF and pulse dialing compatible Passes CPC signals Electrically isolates PABX station from extended loop Provides additional lightning and surge protection Selectable ring protocols