Outbound Call Filtering in VSM4

We are excited to introduce the latest enhancement to our VSM4 module: Outbound Call Filtering. This new feature empowers VoIP administrators with greater control over outbound call permissions, offering a powerful tool to manage and customize call routing for retail clients. Let’s explore how this feature can revolutionize your call management strategy.

Understanding Outbound Call Filtering

Outbound Call Filtering is a dynamic rule-based system that allows VoIP administrators to control which prefixes retail clients can call. This feature operates on two primary configurations: block and allow. By defining specific prefixes in these configurations, administrators can tailor call permissions to meet specific requirements, ensuring both security and efficiency.

Block Configuration

The block configuration enables administrators to specify prefixes that retail clients are restricted from calling. For instance, if the prefix 44 is added to the block list, users will be prevented from making calls to any numbers starting with prefix 44. This feature is particularly useful for preventing unauthorized or costly calls to certain regions, thereby reducing the risk of fraud and managing expenses.

Allow Configuration

Conversely, the allow configuration grants permission for calls only to specified prefixes, effectively blocking all other destinations. By adding the prefix 44 to the allow list, users will be permitted to call only numbers starting with 44 prefix, while calls starting with all other prefixes will be blocked. This configuration is ideal for businesses with specific regional call needs, ensuring that resources are focused and communication is streamlined.

Streamlined Administration: No More Tariff Adjustments

One of the standout benefits of the new Outbound Call Filtering feature is that administrators no longer need to adjust tariffs to block destinations. Traditionally, managing call permissions often required intricate tariff modifications, which could be time-consuming and complex. With Outbound Call Filtering, administrators can easily set block or allow rules for specific prefixes directly, streamlining the process and enhancing operational efficiency.

Flexibility and Control for Administrators

The Outbound Call Filtering feature provides VoIP administrators with a high degree of flexibility and control over call permissions. By leveraging block and allow configurations, administrators can:

  1. Optimize Call Routing: Tailor call permissions to match business objectives and customer needs, ensuring efficient use of resources.
  2. Enhance Security: Prevent unauthorized access to certain regions, reducing the risk of fraud and enhancing overall security.
  3. Manage Costs: Control expenses by restricting calls to high-cost destinations, aligning call permissions with budgetary constraints.
  4. Customize Services: Offer tailored services to clients based on their specific geographic or business requirements, enhancing customer satisfaction.
  5. Streamline Processes: Avoid the need to adjust tariffs for blocking destinations, simplifying administration and saving time.

Implementing Outbound Call Filtering in VSM4

Integrating the Outbound Call Filtering feature into the VSM4 module is straightforward. Administrators can easily access the configuration settings through the VSM4 interface, where they can define block or allow rules for specific prefixes. The intuitive design ensures that even those with minimal technical expertise can manage call permissions effectively.


The addition of Outbound Call Filtering to the VSM4 module marks a significant enhancement in call management capabilities. By offering precise control over outbound call permissions, this feature empowers VoIP administrators to optimize call routing, enhance security, manage costs, and deliver customized services to clients. As the VoIP industry continues to evolve, innovations like Outbound Call Filtering underscore our commitment to providing cutting-edge solutions that meet the needs of our customers.

Experience the power of enhanced call management with Outbound Call Filtering in VSM4, and take your VoIP service to the next level.

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