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Small beige box with screw terminals and LED indicator

Viking

Viking CPC-1 Calling Party Control telephone accessory

SKU CH-Y1F6-TQ97X MPN CPC-1

Generates a one-second disconnect signal upon detecting busy tones or silence to automatically hang up and redial, powered directly from the phone line

  • SpecificationsViking Calling Party Contol
  • Automatically disconnects on busy or fast busy signals
  • Generates one-second CPC signal when silence is detected
  • Works with Caller ID without interrupting service
  • Powered from the phone line, no mains adapter required
  • LED indicates audio activity and generated disconnect signal

Calling Party Control Function

The Viking CPC-1 is a telephone line accessory that generates a one-second disconnect signal when specific call-progress tones or silence are detected. It connects via a four-position screw terminal block and draws power directly from the phone line, requiring no external AC supply. An onboard LED indicates line status, audio detection, and generated CPC signals.

Installers Needing Automated Disconnect

This device suits installers integrating phone lines with voicemail, auto-attendants, or dialers that require a clear supervisory disconnect to release ports. It is not suited for digital, IP, or proprietary PBX extensions that do not present standard loop-start signalling, nor for applications needing adjustable disconnect durations beyond the fixed one-second nominal timing.

Fixed One-Second Disconnect Timing

The CPC-1 produces a nominal one-second disconnect pulse triggered by busy signal, reorder tone, return to dial tone, or steady silence, with the latter two being programmable. This fixed duration is the critical parameter; systems requiring longer or shorter disconnect intervals to meet specific regulatory or equipment requirements cannot use this unit.

Highlights

  • Automatically disconnects on busy or fast busy signals
  • Generates one-second CPC signal when silence is detected
  • Works with Caller ID without interrupting service
  • Powered from the phone line, no mains adapter required
  • LED indicates audio activity and generated disconnect signal

Specifications

BrandViking Electronics
ModelCPC-1
SpecificationsViking Calling Party Contol
Shipping weight0.23 kg
Package size178 × 76 × 51 mm

Questions about this item

Will the CPC-1 work on my existing analogue phone line without needing a mains socket?

Yes, the unit is phone-line powered and draws its operating current from the loop, so no AC adapter is required.

How can I confirm the CPC-1 is actually generating the one-second disconnect when a busy signal occurs?

The front LED lights to show audio detected and again when the CPC disconnect pulse is generated, giving a visual cue each time it fires.

Does the package include the wiring needed to connect the four-position screw terminal block?

The accessory ships with the CPC-1 module only; you must supply your own station wire or modular cord for the screw terminals.

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