Tech

Optimizing VoIP Connectivity: Disabling Application Layer Gateway on the ZXHN H167A Router

Published on:

October 17, 2023

In the realm of network optimization, disabling the Application Layer Gateway (ALG), a critical component in network routers responsible for translating network traffic for specific applications, takes center stage. Focusing on the ZXHN H167A router model, this blog post sheds light on the importance of turning off ALG for VoIP connectivity. By deactivating ALG, you can enhance the performance of your VoIP system, ensuring it operates smoothly without any interference from the router.

Remote work presents a host of technological opportunities and challenges - one such challenge is ensuring seamless internet connectivity, both in the office and for people working remotely. In our pursuit of a reliable solution, we came across the ZXHN H167A model router, an OEM device utilized by Claro, a prominent internet and phone service provider in the Dominican Republic.

For VoIP technicians, it's imperative to delve into router configurations to guarantee optimal performance for both desktop phones and Vodia Web Apps; this means ensuring robust two-way audio communication. In this blog, we'll guide you through the process of disabling ALG on the ZXHN H167A router, a crucial step in deploying the Vodia phone system effectively with these routers. 

Disabling ALG on ZXHN H167A Router

The Application Layer Gateway (ALG) is a crucial component in network routers - it supports the translation of network traffic for specific applications. In certain scenarios, however, especially for VoIP technicians, disabling ALG can make the deployment of VoIP systems more efficient.

Steps to Disable ALG on the ZXHN H167A Router

  1. Access the Router Interface: begin by entering the router IP address into your web browser. Log in using your credentials to access the router's settings.
  2. Navigate to Advanced Settings: once inside the router interface, locate "Advanced Settings" or a similar tab; this section typically contains advanced configuration options.
  3. Find the ALG Configuration: within Advanced Settings, look for the ALG configuration, which is where you can modify ALG settings.
  4. Disable ALG: tick the box or select the option that allows you to disable ALG; this will prevent the router from intercepting and modifying VoIP traffic, which is crucial for optimal functioning of VoIP systems.
  5. Save and Reboot: after disabling ALG, make sure to save your changes and reboot the router.

By following these steps, you can enhance the performance of your VoIP system when deploying it with the ZXHN H167A router. Disabling ALG ensures the router doesn't interfere with VoIP traffic, which is vital for seamless communication. As a VoIP technician, optimizing router settings is a crucial aspect of delivering top-notch service to your clients. Happy deploying!

To configure your desktop phone, reset your VoIP phone to factory default and follow these guidelines to provision a VoIP desktop phone with the Vodia PBX. 

See Also:

Latest Articles

View All

Real Telecom and CallSmart Announce the Integration of the Vodia PBX with the CallSmart

Real Telecom and CallSmart have announced the integration of the Vodia PBX with the CallSmart AI communication platform, delivering a feature-rich, cost-effective voice solution tailored for modern dental and healthcare practices. The integration empowers clinics with advanced call center functionality, HIPAA-compliant data security, and seamless communication tools that reduce missed appointments and enhance patient engagement. CallSmart’s AI captures missed calls and automatically engages patients via SMS, while Vodia PBX ensures easy installation and reliable performance.

May 13, 2025

Fast and Easy: Vodia Prepaid Cloud for Microsoft Azure

Vodia’s prepaid cloud PBX solution for Microsoft Azure enables businesses to quickly deploy a fully licensed, enterprise-grade phone system without the complexity of traditional installations. Designed for speed, scalability, and ease of use, the offering supports packages for up to 80 users and includes a Teams-certified Session Border Controller (SBC) that allows seamless integration of Vodia PBX features—such as auto-attendants, call queues, and intelligent routing—directly within Microsoft Teams. Whether you’re an SMB or a growing enterprise, Vodia’s prepaid PBX is a powerful and flexible solution that’s easy to scale as your business evolves.

May 12, 2025

Unlocking Swift Communication: The Vodia Prepaid DigitalOcean Cloud Advantage!

Vodia’s prepaid offering on DigitalOcean provides businesses with a fast, flexible way to deploy a fully licensed PBX system. Our tailored plans include options for SBC functionality, certified for MS Teams, enabling seamless integration of advanced PBX features like intelligent call routing, automated attendants, and voicemail, all while ensuring secure, high-fidelity voice communication. With extension-based licensing, organizations can easily scale their system from 10 to 80 extensions, making deployment simple and quick. Whether you’re new to PBX systems or an experienced developer, our step-by-step installation video and documentation guide you through the setup process.

May 5, 2025