Select Advanced, click Yes to accept the warning, then click Remote Administration. Router Manufacturer Steps to Disable SIP ALG; Actiontec: Select Advanced, click Yes to accept the warning, then click ALG’s. Click the drop-down menu to disable SIP passthrough; Click apply; TP-Link: 192.168.1.1: Click Advanced Setup; Click on NAT; Click on ALG; Uncheck the box labeled SIP Enabled; Click Save/Apply; Netgear: 192.168.0.1: Click Advanced; Click WAN Setup; Check the box called Disable SIP ALG; Click Apply; D-Link: 192.168.0.1: Click Advanced; Click Firewall Settings b. a. Uncheck the SIP ALG Enable option. Most models have a check-box reading something similar to "Disable SIP ALG" in figure 3 below. Find the WAN setup option and locate the item where SIP is mentioned (usually, this falls under the Advanced tab). Go to Firewall > Firewall Rules > Custom FirewallAccess Rules Click the "Disabled" check box next to any rules named LAN-2-INTERNET-SIP and INTERNET-2-LAN-SIP This disables SIP ALG. Cisco (non-ASA) Find SIP Fixup; On General Routers, apply the following: no ip nat service sip tcp port 5060; no ip nat service sip udp port 5060 Instructions for how to disable SIP ALG on many top routers. Figure 3: Disabling SIP ALG on a SonicWall Router. Disable SIP ALG option is only available on BT Business Hub versions 3 and higher. Figure 3: Disabling SIP ALG on a SonicWall Router. Find the SIP ALG feature under NAT or router firewall settings. From the ADMIN page of the router, navigate to [Administration] > [Advanced]. In the upper-left corner of … Check the box, apply the settings and reboot if prompted. When the Warning - Your Modem Needs to be Rebooted for SIP ALG to be Disabled message appears, click the OK button. Ensure SIP ALG is disabled by removing the check. c. Below the SIP ALG Enable option, click the Apply button to save changes. Check the box, apply the settings and reboot if prompted. Linksys BEFSR41 From the ADMIN page of the router, navigate to [APPLICATIONS & GAMING] > [PORT TRIGGERING]. BT. Find the WAN setup option and locate the item where SIP is mentioned (usually, this falls under the Advanced tab). Billion. Look for and disable a SIP ALG option. No option to disable SIP ALG. Billion Navigate to the web interface -> Select Configuration -> Select NAT -> Select ALG -> Disable SIP ALG How to Enable or Disable SIP ALG in Huawei 4G Router - YouTube Click Apply. Most models have a check-box reading something similar to "Disable SIP ALG" in figure 3 below.