Recommended Router Settings for iTel SIP Phones

All routers have different settings, but here are some general principles.

  • SIP ALG (application level gateway) can sometimes be helpful, sometimes not, depending on the router. Toggle it and see if it positively affects the phones
  • SPI (stateful packet inspection) will most likely cause problems on your phones. Disable it.
  • UDP timeout should be set to 300 seconds.
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