That is where the Branding Image goes that does show in that position on the Reseller interface. You must have a URL reference and cannot just upload the image.
Image is re-sized to 175px × 40px so its best to just target that size.
Also the "Powered by..." takes the company name for footers and works on Reseller and User Control Panel.
Also the User CP does say in Call History: VOIPo Number.
It would be better to say In Network Number.
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