08/24/18 20:34 PM  

Network - Disable SIP ALG | D-Link Router | RingCentral

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SummarySIP ALG can be disabled on the D-Link router to help with one way audio and audio quality issues that can be experienced with your RingCentral service.
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Disable SIP ALG - D-Link Router

Session Initiated Protocol (SIP) Application Level Gateway (ALG) is enabled by default on a D-Link router.  This feature allows automatic response to VoIP connection and opens appropriate application ports. This is useful for outgoing VoIP calls.

IMPORTANT:  Changing your router's configuration is critical. For more information in configuring your router's settings, contact your router manufacturer for advanced support.

Access the router interface
Configure the router


Access the router interface


1. Enter the router's IP address in the address bar of your web browser.

NOTE: To check your router's IP address on a Windows computer, follow the steps below:

1. Access the command prompt by pressing the Windows key + R

2. Enter "cmd" then press [Enter].

3. Type in IPCONFIG, then look for Default Gateway.


2. Type in the Administrator’s User Name and Password in the authentication screen, then click Log In.

NOTE: The default username and password for a D-Link router is:

Username: admin or Admin
Password: <blank>

Enter User Name and Password, then click Log In.


Configure the router


1. Click ADVANCED.

Click Advanced


2. Click FIREWALL SETTINGS.

Click Firewall Settings


3. Uncheck the box for Enable SPI.

Enable SPI


4. Select Endpoint Independent for both UDP Endpoint Filtering and TCP Endpoint Filtering.

Endpoint Filtering for UDP and TCP


5. Uncheck the SIP box for APPLICATION LEVEL GATEWAY (ALG) CONFIGURATION.

Uncheck SIP


6. Click Save.



See Also

Setting up Port Triggering on a D-Link DIR-655 router

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