---
title: "Configure a D-Link DIR-655 Router for VoIP Services"
slug: "configure-a-d-link-dir-655-router-for-voip-services"
updated: 2026-05-22T19:35:40Z
published: 2026-05-22T19:35:40Z
canonical: "help.8x8.com/configure-a-d-link-dir-655-router-for-voip-services"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.8x8.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Configure a D-Link DIR-655 Router for VoIP Services

## Objective

Configuring a DLink DIR-655 router for use with VoIP services.

The purpose of this article is to provide a **sample configuration**. At the time of article creation, this device was in a known working state on the firmware used. **Keep in mind different firmware versions will interact with hosted VoIP services in different ways.** While this device may be fully functional on the tested and/or current firmware version, it is possible newer revisions will cause disruptions in service or make a device fully compliant with the required settings for hosted VoIP services where it was previously not.

## Applies To

- DLink DIR-655 Routers

![](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/12817)

## Procedure

> [!NOTE]
> **Note**:
> 
> The DIR-655 may require a fair amount of configuration changes to optimize performance the first time around. However, after that is done, it is stable and effective.

### Administrative Information

1. Make sure your router is powered on and connected to your network.
2. In a browser on a computer on the same network as the router, navigate to the following IP address: **192.168.0.1**.
3. Log in (default credentials shown below).
  - Username: **admin**
  - Password: **<blank>**

Tested on the following firmware versions:

- 1.35NA (rev A4)
- 2.10NA (rev B1)
- 3.01B07 (rev C)

**Adding/editing 8x8 subnets is recommended when available.** Review the [X Series Technical Requirements](/support/docs/x-series-technical-requirements) for more information.

### Disable SIP ALG

1. Go to **Advanced** > **Firewall Settings**.
2. In the **Application Level Gateway (ALG) Configuration** section, check the boxes next to **PPTP** and **IPSec (VPN)**.
3. Ensure that the box for **SIP** is unchecked.
4. Click **Save Settings**. ![DIR-NATfiltering.jpg](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/10718)

> [!NOTE]
> Note:
> 
> *NAT Endpoint Filtering is no longer configurable.*

### QoS Configuration

1. Go to **Advanced** > **QoS Engine**. This will bring up your QoS settings (bandwidth management).
2. Click the box next to **Enable Traffic Shaping** to enable **WAN Traffic Shaping**.
3. Set the **Manual Uplink Speed** to an appropriate value based on your Internet connection. **Note**: Automatic Uplink Speed is disabled in 8x8’s QoS configuration as the feature adds some additional delay in the boot up time of the router.
4. Check the box next to **Enable QoS Engine** in the **QoS Engine Setup** portion of the screen. ![](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/12815)
5. Go to the **QoS Engine Rules** section and set up the following values for 8x8 subnets. ![](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/12816)
6. Click **Save Settings**.

## Additional Information

Download and install one of the below as appropriate on your D-Link DIR-655 router to load the 8x8 recommended QoS settings automatically.

- ![](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/global_doc.gif)8x8_D-Link DIR-655 (Rev B1) Router QoS Configuration File (older model)
- ![](https://cdn.us.document360.io/e3a59e39-abd3-4423-964c-0a4008dc5673/Images/Documentation/global_doc.gif)8x8_D-Link DIR-655 (Rev C1) Router QoS Configuration File (newer model)