Add Phone Numbers to a Whitelist to Bypass Spam Filter

Telzio offers a spam blocking feature that filters incoming calls for telemarketers and then blocks them from reaching your business. In order to avoid certain phone numbers from being blocked by the spam filter, Telzio also offers a whitelist feature.

Sign up here for access to spam filter and whitelist features.


What is a Whitelist?

A whitelist is a group of items, or phone numbers in this case, that are approved by you. The way that a whitelist works in the case of telecommunications, is that essentially, whitelists provide a list of telephone numbers that you approve. This grants these specific telephone numbers the access to directly call and contact you or your business.  What is great about whitelisting is that a whitelist can really help to protect business and computing networks. Whitelising is the inverse of blacklisting. Whitelisting will block unauthorized software until it is expressly allowed to connect to a network. In other words, individuals or companies will only be able to call and contact you if they are provided in your whitelist.


What is a Blacklist?

In the case of telecommunications, a blacklist is a list of specific phone numbers that are blocked and prohibited from calling you or your business. The way that a blacklist works, is that any of the numbers that are listed in a blacklist will be blocked the authorization of calling or contacting you. The specific telephone numbers on a blacklist could be numbers that are distrusted or that you simply want to avoid. A telephone blacklist is a way  to protect yourself or your business from unwanted contacts. This is something that can also save your company time, as your business will not have to spend any time conversing with unwanted businesses or individuals.


How to Add Phone Numbers to a Whitelist

You can enable the spam blocking feature at a standard level or an aggressive level, which automatically references a national database and then determines if the call is likely to be spam. You can also block numbers by adding them to a blacklist. In the blacklist, you can block specific phone numbers or entire countries.

If you have an entire country banned on your blacklist, you can still whitelist a phone number from that country to allow incoming and/or outgoing calls from that number only.

In the example below, all inbound and outbound calls to/from the 800 number are blocked. All inbound and outbound calls to/from the 888 number are approved. And all inbound calls from the 234 country code are blocked.


How does Spam Call Blocking work?

Using an automated API system that pulls data about phone numbers, the Telzio system is able to detect how likely a call is to be spam. Based on this Spam likelihood, Telzio then blocks the call from reaching your phone system. You can enable and disable the Spam Call Blocking feature anytime, so there’s no commitment if you decide to turn off the feature.

Related: List of Dial Codes for Your Phone System

Jennifer is part of the content marketing team at Telzio, providing insight and tips on how Telzio can be used to optimize business communications and customer service.