What is the default Blacklist time interval in 3CX?

The default Blacklist time interval in 3CX is correctly identified as 1800 minutes. This means that when a number is blacklisted, it is blocked for a duration of 1800 minutes, which can help in reducing unwanted calls from persistent sources such as spammers or telemarketers.

The 1800-minute duration is designed to provide a balance, allowing for effective call management without being overly restrictive. It ensures that legitimate callers who may have mistakenly been flagged can still regain access after a certain period, while still offering robust protection against repeat offenders.

In contrast, other time intervals such as 600 minutes, 1200 minutes, or 2400 minutes either offer insufficient protection or extend the period of blocking longer than necessary. Thus, using 1800 minutes strikes an effective compromise between accessibility and security, making it the preferred choice for the default settings in 3CX.