Networking and Communication

A Brief History of the Internet

VoIP

Typical VoIP communication

Typical VoIP communication

Voice over IP (VoIP) allows analog signals to be converted to digital signals, then transmitted on a network. By using existing technologies and software, voice communication over the Internet is now available to anyone with a browser (think Skype, WebEx, Google Hangouts). Beyond this, many companies are now offering VoIP-based telephone service for business and home use.

Callback before_footer in local_aigrade component should be migrated to new hook callback for core\hook\output\before_footer_html_generation

line 7225 of /lib/moodlelib.php: call to debugging()
line 7292 of /lib/moodlelib.php: call to {closure}()
line 71 of /lib/classes/hook/output/before_footer_html_generation.php: call to get_plugins_with_function()
line 987 of /lib/classes/output/core_renderer.php: call to core\hook\output\before_footer_html_generation->process_legacy_callbacks()
line 97 of /mod/book/tool/print/index.php: call to core\output\core_renderer->footer()