Overview
Some modem-router combos (or combo routers) may experience call quality issues such as one-way audio. Combo routers often lack the ability to disable SIP-ALG, which can prevent VoIP traffic from properly routing. To resolve these issues, it's recommended that combo router users place their combo routers in bridge mode. This requires the user to purchase a standalone router, and to contact their ISP for assistance. Some ISPs will attempt to have you purchase a static IP from them. This is typically not necessary.