We have really poor cell service in our house (Verizon) so we rely on wifi calling, especially since I work from home. We got a c7800 modem/router to help with our internet speeds and reliability, but now our WiFi calling feature on our phones no longer work. I tried finding a solution on the board but couldn't find one for this model modem/router. Suggestions?

Update: my Wi-Fi calling stopped working again after about an hour, but started working on my husband's phone. Seemed like only one phone would work at a time. I ended up changing the channel on the router and BAM it's working on all phones now. Guess the channel may have been overloaded. So, if anyone else is having this problem, try Disabling SIP ALG and changing the channel on the router.

WiFi calling not working with c7800

12 Replies

plemans
Guru - Experienced User
May 09, 2020
what specific device are you and the significant other using?

https://www.verizonwireless.com/support/wifi-calling-faqs/
https://www.verizonwireless.com/support/knowledge-base-204165/
https://www.verizonwireless.com/support/wi-fi-calling/
- Raquelmadron
  Tutor
  May 09, 2020
  I have an iPhone 8 and my husband has an iPhone X. Both worked with WiFi calling before we got this new modem/router last week. We were using a Motorola MG7540 previously.
  - plemans
    Guru - Experienced User
    May 09, 2020
    try Disable SIP ALG
    https://kb.netgear.com/30796/How-do-I-disable-SIP-ALG-on-my-NETGEAR-device-using-the-router-web-interface

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WiFi calling not working with c7800