Nuisance calls
To avoid receiving unwanted telesales calls, your extension number should be registered with the Telephone Preference Service (TPS). The Telecoms Office has bulk registered all numbers in the university extension range including mobile numbers.
If you continue to receive unwanted Telesales Calls then you need to complete the Complaint Form as described on the Information Commissioner's Office website.
Further information on marketing calls and how to avoid them can be found on the Information Commissioner's Office website
Malicious calls
Malicious calls should be dealt with on a case by case basis. Contact the Telecoms Office on phones@uis.cam.ac.uk if you are experiencing this sort of call.
FAX calls
It is possible to send a document from a FAX machine and if the distant end is either busy or temporarily out of service, it can be arranged to repeatedly attempt to send the document until the distant end answers successfully. Such an arrangement works well except when the caller has mis-dialled and a normal extension is called. As the FAX machine at the originating end does not see the response it expects, it repeatedly dials the same number to the frustration of the extension user.
If you can detect such calls coming into your extension, then temporarily transfer your extension to a local FAX machine. Next time the distant FAX machine calls, it will get the responses it requires and the phone will stop ringing.
Check the incoming FAX and if necessary advise the sender of the FAX that it has been misdirected.
Text Messages
Suspicious text messages should be forwarded to 7726. This free-of-charge short code enables your provider to investigate the origin of the text and take action, if found to be malicious.