CircuitWerkes Call Progress Decoders

The CP-1 and CP-2 are call progress decoders that allow any automatic telephone coupling device to hang up properly on PBX or other telephone lines that don't provide the customary end of call D.C. signaling, commonly known as CPC or COD. Many PBXs and a few telco COs do not provide the end-of-call drop in line current that makes telephone couplers hang up. So, the CP-1 and CP-2 listen for dial tone and/or busy (reorder) signals and force the attached unit to hang-up if they are detected. The CP-1 is designed to fit inside other CircuitWerkes products such as the DR-10, HC-3, or AC-1. The CP-2 is designed to be used with all telephone devices, regardless of maker. Installation is simple: Just connect one RJ-11 to the wall and the other to the device that you want to hang up. Both the CP-1 and CP-2 feature internal jumpers that let you select whether they will detect dial tone, busy or all tones. User adjustable delay before hang up prevents false tripping.

Telephone devices won't hang up on your line? CircuitWerkes Call Progress Decoders provide an effective solution to the problem. Features > Detects standard busy & dial tones. > Alternate setting lets the CP-1 & CP-2 detect any call progress tones. > CP-2 Breaks the phone line connection to the autocoupling device, forcing hang up. > CP-2 has LED indicators for CPC (aka wink) and power. > CP-2 Breaks the phone line connection to the autocoupling device, forcing hang up. > The CP-1 interfaces directly with the host to force hangup. > Adjustable detection delay helps prevent false hang-ups.. > On devices with hybrids, like the DR-10 and HC-3, the CP-1 listens to the hybrid output making it unusually reliable. > Jumper settable CPC length > Custom or special single call progress frequencies available > Two year warranty standard.