Understanding dropped calls
Dropped calls typically occur for the following reasons.
- Router firewalls – Firewalls are the leading cause of dropped calls. Most routers have a service called SIP ALG. This service can cause call quality issues, dropped calls, phones not to ring, and calls to drop during a transfer. Disable this setting for the best call quality. Learn more by searching “SIP ALG” on our support page.
- Internet Quality – Internet quality is essential to call quality. If you are experiencing garbled or dropped calls make sure that your internet service is at least 5mbps. Test Here.