All about telephones
This section covers specific issues ranging from analogue, digital and mobile telephone principles through to repairs and line testing. On desktop view, if you "hover" over the tabs above, more drop down tabs appear. Click on the selected tab to go to the relevant page. Mobile phone layout is different. Refer to introduction page.
This section covers specific issues ranging from analogue, digital and mobile telephone principles through to repairs and line testing. On desktop view, if you "hover" over the tabs above, more drop down tabs appear. Click on the selected tab to go to the relevant page. Mobile phone layout is different. Refer to introduction page.