I am the author of WarVOX (a mostly dead project these days). Some useful links:

- WarVOX 2.0 Presentation: https://speakerdeck.com/hdm/derbycon-2011-acoustic-intrusion... - WarVOX Source: https://github.com/rapid7/warvox

The US legal restrictions on wardialing are complicated and changes to the law made it difficult to continue the project.

For fans of ToneLoc, I implemented the data format and visualization with my latest project (Rumble Network Discovery): - https://www.rumble.run/blog/subnet-grid-report/