+This guide was created using a Cisco EA6500 (Linksys AC1750)series router.
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+How to Disable SIP ALG
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+ Log into the router and navigate to Connectivity -> Administration -> Application Layer Gateway
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+ Uncheck the following to disable SIP ALG:
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+ * Enable SIP ALG
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+Click the Apply button at the bottom of the page. A reboot should not be necessary, but if you’re still experiencing issues then it is a good idea to try rebooting the router and testing again.