Virtual Telephone Systems

The issue surrounding virtual telephone numbers (Ghost telephones) - ie being able to obtain a landline number on a mobile phone account - is continuing to raise concern in respect of invoice verification.

My only advice is:-

•  to double check landland numbers with one of the directory operators (192 or 118118)
• at audit always look at all mobile telephone bills and check for landline numbers.
• Also telephone another office of the same company and asking to be transfered to the named contact/subsidary would also give a good indication that the number was genuine.

Any other bright ideas would be welcomed....