This is an easy to use extention, select any number on a web page, right click to open the context menu which you can use to call this number.
It's forked from original Asterisk Click2Dial from Antoine Turmel, i have added some useful option...

Asterisk Click2Dial+ - Firefox Add-on
Asterisk Click2Dial+ is an easy-to-use Firefox add-on that enables users to call any phone number on a web page by simply selecting the number, right-clicking, and choosing to call. It is a forked version of the original Asterisk Click2Dial, offering additional useful options.
Add-on stats
Manifest V2
By: Simone Freddio
Rating: 5.00
(1)
Weekly download count: 3
Firefox on Android: No
Permissions:
- storage
- menus
- <all_urls>
- activeTab
- tabs
Size: 17.69K
Email: si*****@voippartners.it
Source: Firefox Browser Add-ons
Ranking
Add-on safety
Risk impact
Asterisk Click2Dial+ requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- Critical ****** ****** ** ******* ***** ***** *** ** **** ** ***** **** ******** ****** *** ******** ********** * ******* ********
- High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
- Low ******* ****** ** *** ********* ********
Risk likelihood
Asterisk Click2Dial+ has earned a fairly good reputation and likely can be trusted.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
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