If you are upgrading your emergency dispatch, public safety, or air traffic control console, understanding the differences between specialized Push-To-Talk (PTT) adapters is critical to maintaining a zero-fail communication environment. While both models may look identical to the untrained eye, comparing the single-channel ca22cd sc against its dual-channel counterpart, the CA22CD-DC, reveals distinct connection functionalities designed for different console setups. Serving as the modernized replacement for the legendary but discontinued CA12CD-S, the new CA22CD series upgrades your station with military-grade 256-bit AES encryption, lightning-fast 36-millisecond PTT latency, and seamless integration with existing Poly H-series headsets. In this breakdown, we will examine the technical differences between these two DECT wireless adapters so you can confidently deploy the exact configuration your command center requires.
A. CA22CD-SC
The CA22CD-SC is the replacement of the CA12CD-S, uses the same PJ-7 with double prong interface cable as the old one and its the most common used for the PTT capability. The new CA22CD-SC now has a modular eight-position jack for connection to analog equipment, while the old one had only a six-position. The new USB port on the back comes with USB serialized on a “friendly name” which comes programed at the factory for easy identification of multiple CA22CDs connected on the same host PC. Compatible with any Poly/Plantronics H- and HW- headsets.
B. CA22CD-SC 6 POS Modular Prong
Poly offers another variant for the Ca22CD-SC in the form of the 6 Modular Prong connector, this takes the place of the previously mentioned PJ-7 with double prong interface. Some consoles are directing their attention to the 6 POS Modular Prong, the look of this prong is pretty similar to a CAT 7 cable and it doesn’t require a specialized plug as the PJ-7. The CA22CD-SC 6 POS Modular Prong comes with the same high encryption chip found in the other variants, with the same range and the same easy to use PTT feature. The base has the built in Micro USB, making it easier to plug in the computer and it is supported by most of the voice communication consoles. Fully compatible with any of the H-Top corded headsets from Poly/Plantronics.
C. CA22CD-DC
The main difference between the SC and the DC is the console interface cable, which comes with a Lemo connector instead of the PJ-7. A Lemo connector is one of the newest on the market as they are used for panel and coaxial connections and in fields like telecommunications and advanced projects for research. Some of the Lemo connector projects are required to comply with standards as the ones provided by Underwriters Laboratory (UL). This connectors are more advanced and more powerful as they are used for high-voltage projects and some of these projects are performed in some universities.
The CA22CD-DC uses a Switchcraft TA6FLX connector for the dual channel systems and for the same reason it is only compatible with the new Poly’s dual channel headsets as it will not be compatible with the Poly H- or HW- headsets.
For the same reason of requiring a higher voltage and more advance connectors on the projects, these kind of PTT units tend to be more expensive than the regular counterparts with the PJ-7 connector.
Both models work the same way and have the same features like the secure-voice operation which is programmed in the factory that mutes the microphone by default until the PTT button is pressed, the volume control adjust rocker on the remote, visual indicators of status on the remote, battery charging on the base and audible indicators like low battery on the earcon or volume fine-adjustment in the earcon, plus the improved talk time that takes it from the old 8 hour talk time to 10 hours talk time.
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