Discrete PTT for TPH900 – Model PTT48

Key Specifications
  • Discrete PTT for Polycom THP900 – Model PTT48
  • Radio connector TPH900 for direct connection to the Polycom handheld radio TPH900
  • with detection circuit on the 3.5 mm 4-pole jack
  • with integrated microphone
  • side PTT button

 127.02
Sie sparen 

(incl. VAT / excl. shipping costs)

Discrete PTT48 – Universal Headset Compatibility for Professional Operations

The discrete PTT48 was developed for professional users who depend on reliable and flexible communication in their daily police work – whether on patrol or during covert operations. A common problem in the field is that many commercially available earphones have different pin assignments, which significantly complicates their use with security-relevant technology. Standard headsets, such as iPhone earphones, are often not readily compatible.

This is where the PTT48 excels: It features an intelligent detection circuit that allows a variety of common 3.5mm earphones to be connected directly. The system automatically recognizes the number of pins (whether 2-pin, 3-pin, or 4-pin) and their specific assignment. It also detects whether an external microphone is integrated into the cable. In such cases, the PTT48 automatically deactivates its own microphone to ensure seamless headset functionality.

This automatic adaptation to the connected device eliminates the need for extensive testing or searching for compatible earphones. The PTT48 thus enables a significantly more flexible headset choice and ensures secure, discrete, and reliable communication – regardless of the operational area.

Function Description:

The discrete PTT48 allows the user to connect most 3.5mm plug earphones. The 3.5mm jack circuit detects the number of pins (2-pole, 3-pole, and 4-pole) as well as the pin assignment of the connected headset. It also detects whether an external microphone is integrated into the cable. For headsets with an integrated cable microphone, the microphone on the PTT48 is deactivated.

Thanks to an intelligent detection circuit, the PTT48 automatically recognizes the type of connected 3.5mm earphone:

  • Support for 2-pole, 3-pole, and 4-pole jack plugs
  • Automatic detection of pin assignment
  • Detection of whether an external microphone is integrated into the cable
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