SBR-AC1750: SIP Passthrough Setup

How do I setup SIP Passthrough in my SBR-AC1750?

When using a VoIP phone with the SBR-AC1750, the SIP Passthrough option in the SBR-AC1750 may need to be enabled in order for that phone to have full functionality.  In other situations, it may be recommended by the VoIP phone manufacturer to disable SIP Passthrough.  By default, SIP Passthrough is enabled.  This document describes how to enable SIP Passthrough in the SBR1750.

NOTE: If it is not known if SIP Passthrough should be enabled or disabled, please contact the VoIP phone manufacturer. 
 

To Enable SIP Passthrough

1. Launch a web browser, such as Internet Explorer, Firefox, or Safari.  Enter http://192.168.0.1 into the address box and press the Enter key.  The Login page appears.
   
   NOTE: By default the LAN IP address is 192.168.0.1.  If the default address has been changed, enter the custom address in the address box.
   
   
    
2. On the Login page:
   a.   Enter password in the Password field.
   b.   Click the Login button.  The Home page appears.
   
   
    
3. Move the mouse-cursor over the Firewall tab and select the ALG sub-link.  The Firewall - Application Layer Gateway Settings page appears.
4. On the Firewall - Application Layer Gateway Settings page:
   a.  SIP - Check mark the box. 
   b.  Click the Apply button.