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How to Block VoIP Calls Easily: The Definitive Guide

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Today, VoIP has become an essential tool for business and personal communication. Thanks to VoIP technology, this technology offers significant advantages such as cost reduction, flexibility, and a wide range of advanced features that enhance traditional telephone lines.

However, the exponential growth of VoIP has also led to an increase in unwanted calls. Spam calls, scams, and robocalls can disrupt our daily activities and jeopardize the security of our communications.

Tip: Telecom fraud increased by 12% in 2023, equating to an estimated $38.95 billion in fraud losses, according to the Communications Fraud Control Association (CFCA) data.

Are you concerned about these constant outages at your PBX? Do you want to protect your business and keep your team productive? In this article, we will explore the reasons behind the increase in these unwanted calls, the different types of threats, and, most importantly, the strategies and tools you can implement to easily block VoIP calls..

Why You Need to Block VoIP Calls

In the business environment where efficient communication is critical to success, unwanted VoIP calls pose a significant threat.

Blocking VoIP calls improves productivity, protects the VoIP security of your company’s system, and optimizes resources.

Here are the main reasons why it is essential to block VoIP calls:

Reduce Interruptions

Unwanted calls interrupt workflow, distracting employees from their primary tasks. These frequent interruptions can decrease operational efficiency and negatively affect team morale.

Improve Productivity

By eliminating VoIP spam and scam calls, your employees can focus on their responsibilities without wasting time attending to unnecessary communications. It translates into greater efficiency and improved overall business performance.

Protect Security

Many unwanted VoIP calls are fraud or phishing attempts that seek to obtain confidential information.

Blocking VoIP calls helps safeguard your company’s and customers’ sensitive data, reducing the risk of security breaches and financial losses.

Improve Customer Experience

When phone lines are saturated with spam calls, legitimate customers may have difficulty reaching your business.
Blocking VoIP calls ensures customers can easily contact you, improving their satisfaction and loyalty to your company.

Save Costs

Unwanted calls can generate additional costs in call minutes and customer service resources.

Eliminating these calls contributes to more efficient financial resource management, allowing your company to invest in more productive and strategic areas.

Comply with Regulations

In many countries, there are strict regulations on unsolicited business calls. Blocking unwanted VoIP calls helps you comply with these regulations, avoiding possible legal sanctions.

Maintain Company Reputation

Unwanted calls can affect your business’s professional image. By blocking these calls, you show your customers and partners that you value their time and security, strengthening trust in your brand.

Optimize the Use of Technology Resources

Unwanted VoIP calls consume bandwidth and technology resources that could be used for legitimate communications and productive activities.

Types of Unwanted VoIP Calls

Unwanted calls can vary in intent and method, affecting individuals and businesses in multiple ways.

Knowing the different types of unwanted VoIP calls will allow you to effectively identify and combat each one, protecting your time, resources, and security.

Types of Unwanted VoIP Calls

Telemarketers

Telemarketers attempt to sell products or services through unsolicited phone calls. Often, these calls are intrusive and persistent, interfering with daily activities and generating personal and professional annoyance.
While some telemarketers operate legitimately, many use aggressive tactics that can be irritating.

Robocalls

Robocalls are automated calls made by automatic dialing systems that transmit prerecorded messages.
Used primarily for mass marketing campaigns or fraud attempts, these calls can flood phone lines, making it challenging to receive legitimate calls.
Their automated nature makes them difficult to track and block manually.

Scam calls

Scam calls are intended to trick people into obtaining personal or financial information.
Scammers may pose as representatives of financial institutions, government agencies, or other seemingly trustworthy entities and request sensitive data or fraudulent payments.
These calls are a nuisance and pose a significant security risk.

Harassment Calls

Harassment calls are intentionally intended to annoy, intimidate, or threaten a specific person. They may come from individuals with personal motives, such as a former colleague or someone seeking to cause discomfort.
These types of calls can negatively impact employees’ mental health and well-being, affecting their productivity and job satisfaction.

Anonymous Calls

Anonymous calls are those in which the caller’s number is hidden or not shown on the caller ID. While not all anonymous calls are malicious, many conceal the sender’s identity for spam or scam purposes.
Blocking anonymous calls can be effective, but it can also prevent you from receiving legitimate calls from customers or business partners who do not have your number registered.

Strategies for Blocking VoIP Calls

Implementing effective strategies for blocking VoIP calls is critical to protect individuals and businesses from unwanted interruptions and potential security threats.

Effective Use of Caller Identification

Caller ID is a powerful tool for discerning between legitimate and unwanted calls.

Configure your VoIP system to filter out unknown or suspicious numbers automatically. This will allow only calls from verified contacts to reach your device. You can also customize ringtones for different types of calls, which can help you prioritize essential communications without interruptions.

Do Not Call List Registration

Registering your number on Do Not Call Lists is a preventive measure significantly reducing the number of telemarketing calls you receive.

This registry, managed by government entities, forces companies to refrain from contacting registered numbers for marketing purposes. While it does not stop scammers, it is an effective barrier against unsolicited legitimate business calls.

File Complaints with Regulatory Agencies

If you receive abusive or fraudulent VoIP calls, it is important to file complaints with regulatory agencies such as the Federal Trade Commission (FTC) in the United States or the Federal Communications Commission (FCC) in the United States.
These entities investigate complaints and can impose sanctions on companies that violate communications regulations. Documenting each unwanted call facilitates the complaint process and creates a safer communications environment.

Implementing Solutions at the Individual Level

Users can take personal measures to reduce unwanted VoIP calls. Use built-in blocking features on mobile devices, such as call filters on iOS and Android, or install specialized apps such as Truecaller or Hiya.

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These tools automatically identify and block suspicious calls, providing an additional layer of personalized protection.

Enterprise-Level Solutions

Enterprises require more robust solutions to manage and block unwanted VoIP calls that can impact productivity and security.

Implement advanced filtering and blocklisting systems through your VoIP service provider and consider integrating third-party services such as NoMoRoBo for real-time protection. In addition, establish internal policies and train employees to handle suspicious calls to strengthen defense against potential threats.

To reduce spam in your call center, implement custom blocklists and allowlists in your VoIP system.

Expert tip

Advanced Techniques for Enterprises

For enterprises seeking more sophisticated protection against unwanted VoIP calls, advanced techniques offer practical solutions beyond basic strategies.

These methodologies integrate cutting-edge technology and proactive approaches to ensure smooth and secure organizational communication.

Interactive Voice Response (IVR) Systems Deployment

Interactive Voice Response (IVR) systems are a powerful tool for managing and screening inbound calls in an automated manner.
By requiring callers to select specific options via keypad or voice commands, IVR makes it difficult for automated robocalls and scams to operate.
In addition, these systems can direct legitimate calls to the appropriate department, improving customer service efficiency and reducing the burden of unwanted calls.

Employee Training and Awareness Programs

Employee training and awareness are essential in defending against unwanted VoIP calls.

The company’s first line of defense is strengthened by educating staff on how to recognize suspicious calls, the associated risks, and best practices for handling them.

Regular training programs can include scam call simulations, information security workshops, and updates on new and emerging threats, ensuring that all team members are prepared to address and mitigate these challenges effectively.

Additional Tips for Secure VoIP Use

Regular System Audits

  • Assess Vulnerabilities: Identify and correct security breaches.
  • Update Software: Keep all VoIP applications up to date.
  • Backup Data: Protect against data loss due to possible breaches.

Strong Authentication Practices

  • Use Complex Passwords: Change them regularly.
  • Two-Factor Authentication (2FA): Add an extra layer of security.
  • Access Controls: Limit system access to authorized personnel.

Network Security Measures

  • Firewalls: Monitor and control incoming and outgoing network traffic.
  • Encryption: Protect voice data during transmission.
  • Intrusion Detection Systems (IDS): Alert on suspicious activity.

Responsible Use of Social Networks

  • Limit Information Sharing: Avoid posting work numbers publicly.
  • Privacy Settings: Adjust to restrict access to contact details.
  • Educate Employees: Encourage conscientious online behavior.

With VoIPstudio, Blocking VoIP Calls is Very Easy

With VoIPstudio, you can create a blocked contacts group. When a number bothers you, or you detect the call as a scam, harassment, and that kind of unwanted calls, you can add the call to the group and no longer receive calls from that number. It’s that simple.

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Frequently Asked Questions About How to Block VoIP Calls

Can VoIP call blocking affect legitimate business communications?

If not configured correctly, blocking mechanisms could inadvertently block legitimate calls. To avoid this, use allowlists for trusted numbers and regularly update your blocking lists based on accurate data.
Are there legal repercussions for companies making unwanted VoIP calls?

Companies that violate telecommunications regulations can face substantial fines and legal action from regulatory bodies such as the FTC and FCC in the US and the CNMC in Spain.

What should I do if I receive a suspicious VoIP call?

Do not provide any information or interact with the caller. Hang up immediately and report the call to your IT department or relevant authorities for further action.

Can we eliminate unwanted VoIP calls?

While it can be challenging to eliminate all unwanted calls due to spammers’ ever-changing tactics, implementing comprehensive strategies can significantly reduce their frequency and impact.

How often should we review and update our call-blocking strategies?

Regular reviews are essential. You should evaluate your strategies quarterly or whenever a significant change in calling patterns or new threats emerge.

Do international regulations affect how we can block VoIP calls?

Yes, international calls may be subject to different regulations. If your business operates internationally, it is essential to know global compliance requirements.

 

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Thousands of businesses across the world trust VoIPstudio for all of their most vital business communications. Why not be the next?

Thousands of businesses across the world trust VoIPstudio for all of their most vital business communications. Why not be the next?

Start a free 30 day trial now, no credit card details are needed!