What is true about the default voicemail PIN of an extension in 3CX?

The default voicemail PIN of an extension in 3CX consists of 4 random alphanumerical characters. This design choice enhances security by preventing easily guessable PINs, which can occur with fixed numeric codes. Using both letters and numbers adds complexity to the PIN, making it significantly more challenging for unauthorized individuals to gain access to voicemail.

In the context of security best practices, relying on random alphanumerical characters reduces the likelihood of brute force attacks or social engineering tactics that might target users with predictable or common combinations. Therefore, the choice of a random mix of characters is a step forward in ensuring that each extension’s voicemail is as secure as possible right from the default settings.