https://business.forums.bt.com/t5/Archive/Line-Voltage-technical-issue/m-p/84052#M26326 <P>Hi, we use a card terminal on our phone line and recently it has been unable to update over the phone line.&nbsp; I contacted the terminal support people and they said there is "not enough line voltage in the phone line" and to ask BT to increase it.&nbsp; Does this make any sense at all, is it something that can be increased, and would there be a charge for that?</P><P>&nbsp;</P><P>I attempted to use the business chat facility but the form does not seem to submit.&nbsp; Nothing happens when I click the submit button.</P> Fri, 16 Apr 2021 10:25:14 GMT ShepherdKai 2021-04-16T10:25:14Z https://business.forums.bt.com/t5/Archive/Line-Voltage-technical-issue/m-p/84052#M26326 <P>Hi, we use a card terminal on our phone line and recently it has been unable to update over the phone line.&nbsp; I contacted the terminal support people and they said there is "not enough line voltage in the phone line" and to ask BT to increase it.&nbsp; Does this make any sense at all, is it something that can be increased, and would there be a charge for that?</P><P>&nbsp;</P><P>I attempted to use the business chat facility but the form does not seem to submit.&nbsp; Nothing happens when I click the submit button.</P> Fri, 16 Apr 2021 10:25:14 GMT https://business.forums.bt.com/t5/Archive/Line-Voltage-technical-issue/m-p/84052#M26326 ShepherdKai 2021-04-16T10:25:14Z