The CircuitWerkes CP-2 standalone call progress decoder allows 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. It can work with all telephone devices, regardless of maker.

CircuitWerkes CP-2 Features:
• Detects standard busy and dial tones
• Alternate setting lets the CP-2 detect any call progress tones
• Breaks the phone line connection to the autocoupling device, forcing hang- up
• LED indicators for CPC (aka wink) and power
• Breaks the phone line connection to the autocoupling device, forcing hang- up
• Adjustable detection delay helps prevent false hang-ups
• Jumper settable CPC length
• Two year warranty standard