Are multiplex line security systems capable of encryption?

• A. Yes
• B. No
• C. Only with extra hardware
• D. Not specified

Answer: (A)

Encryption can be applied to the data carried by multiplex line security systems, since these systems transmit signals digitally over a single channel. This digital nature allows the data stream to be protected so that intercepted information isn’t readable without the proper key. Because encryption is a feature that can be built into the signaling path or enabled via configuration on many models, multiplex line systems are capable of encryption. Whether a particular installation uses it depends on the specific system, its capabilities, and how it’s configured.