Peplink supports SIP ALG (Application Layer Gateway) across the entire product family; this feature is enabled by default.
If you want to disable SIP ALG, you can select the “Compatibility Mode” under Network > Service Passthrough Support > SIP in Balance Web Admin.
NOTE: The information provided above is from another OnSIP customer offering these settings for other customers with a similar device. OnSIP does not sell nor monitor equipment and/or it’s firmware updates/etc. The settings of routers can change and are out of the control of OnSIP. For best results, reach out to the manufacturer directly.
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