- 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