Call Barring | Phone Number Block | Call Privacy

Privacy & Security

Maintain your anonymity, and save precious staff time

Maintain your privacy when making first contact, and protect your busy staff from nuisance calls with our privacy and security features.

Save precious staff time by barring unsolicited calls before they reach you, and make it easier to access cold contacts by remaining anonymous. Use these Call Handling features alone, or in combination with our messaging features, to remove barriers to ultimate business efficiency.

Block Caller Line Identity (CLI)

Stop call recipients seeing your number when you call out by blocking your CLI and remaining anonymous.

  • Remain anonymous for cold calling new prospects
  • Easy to turn on and off via My Windsor

Call Barring

Ideal for those businesses plagued by unsolicited sales calls that jam phone lines and eat into valuable staff time, call barring allows you to put immediate blocks on specific numbers, or even whole number ranges.

  • Stop nuisance callers
  • Free up lines for legitimate, revenue-generating calls
  • Inform blocked callers of alternative numbers, or other actions to take, by combining with our Announcement feature
  • Block specific numbers, withheld numbers or entire number ranges e.g. 0845

ALL of these excellent services are included in your one-month Free Trial

Choose a memorable number and get a free one-month trial of the complete Windsor Telecom suite of call handling services.

Help Me Choose My Business Number

Try our exclusive simple-to-use wizard and let us help you find the best phone number range to suit your business.

Compare Phone Numbers

View all of our number ranges in this handy table and at a glance compare the different options available for your business.

Frequently Asked Questions about Privacy & Security

How can I avoid nuisance callers ringing My Windsor number?

How secure are your systems?

Call Handling Guide

The ultimate call handling guide for all Windsor Telecom services.

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VoIP for Business

The essential guide to our VoIP for Business service.

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Number Buying Guide

The ultimate guide to buying a memorable phone number for your business.

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