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If your home router is not listed as compatible or known incompatible and you cannot locate a setting related to SIP ALG, first attempt to update the router firmware to the latest available, and recheck the router settings - some manufacturers may not have exposed the setting until later firmware versions. Some routers may include SIP ALG, but not exposed through the web interface normally accessed to change settings. Such routers may require use of a telnet connection, which is highly uncommon for residential consumer routers and therefore not recommended.
Please inform us if any of the below listed routers you have found to be incompatible not listed below.
| Router Make | Router Model | Incompatibility Rationale/Problems |
|---|---|---|
| TP-Link | C7/C9 Archer (AC1750/AC1900, respectively) | No exposed SIP ALG toggling option in web interface |
| Apple | A1354 (4th Gen Airport Extreme) | No exposed SIP ALG setting, spottiness with handset stability |
| Apple | A1408 (5th Gen Airport Extreme) | No exposed SIP ALG setting, spottiness with handset stability |
| Apple | A1521 (6th Gen Airport Extreme) | No exposed SIP ALG setting, spottiness with handset stability |
| Comcast | DPC3939B | SIP ALG cannot be disabled, SIP traffic on port 5060 may be blocked, DNS may need to be manually set to Google DNS (8.8.8.8, 8.8.4.4) for Polycom handsets as temporary work around |
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