Calling using Wifi is not working in my work place .
I tested network settings, changed SIM card , changed phone from iPhone 15 to 17 pro and still not working ,but only in work place . I contacted IT service at work , they did some test and didn’t find any blockage. WiFi Service signal is fine . I can’t call anyone, when I try to call nothing goes through but on the other side the person receives a phone call from me but answering they can’t hear me and they are unable to call me .But I am receiving text messages . I even went to Apple Store , they did some tests , all is good. Any ideas ? It’s frustrating, I have kids in school, and school is unable to contact me if they need to .
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wi fi calling not working
Best answer by WelshPaul
Calling using Wifi is not working in my work place .
I tested network settings, changed SIM card , changed phone from iPhone 15 to 17 pro and still not working ,but only in work place . I contacted IT service at work , they did some test and didn’t find any blockage. WiFi Service signal is fine . I can’t call anyone, when I try to call nothing goes through but on the other side the person receives a phone call from me but answering they can’t hear me and they are unable to call me .But I am receiving text messages . I even went to Apple Store , they did some tests , all is good. Any ideas ? It’s frustrating, I have kids in school, and school is unable to contact me if they need to .
WiFi calling primarily uses UDP ports 500 and 4500 for secure IPsec tunnelling (IKE/NAT traversal) and often TCP port 443 for management, along with a range like UDP 16384-49327 for Real-time Transport Protocol (RTP) voice data, though specific ports can vary slightly by carrier, with older systems using SIP/TLS on port 5061. These ports need to be open on your router's firewall for Wi-Fi calling to work effectively.
Hi,
Thank you for taking the time to explain everything you’ve already tried. I completely understand how frustrating this must be—especially given the importance of being reachable for your children’s school. I’m really sorry you’re experiencing this.
Based on what you’ve described, it’s clear that you’ve carried out extensive troubleshooting already, including changing devices, SIM cards, and checking with both your workplace IT team and Apple. The fact that the issue only occurs at your workplace, that you can receive text messages, and that calls appear to connect but have no audio suggests this may be a localised network or voice service issue rather than a handset fault. Please send us private message.
Thank you,
Zandile
+26Calling using Wifi is not working in my work place .
I tested network settings, changed SIM card , changed phone from iPhone 15 to 17 pro and still not working ,but only in work place . I contacted IT service at work , they did some test and didn’t find any blockage. WiFi Service signal is fine . I can’t call anyone, when I try to call nothing goes through but on the other side the person receives a phone call from me but answering they can’t hear me and they are unable to call me .But I am receiving text messages . I even went to Apple Store , they did some tests , all is good. Any ideas ? It’s frustrating, I have kids in school, and school is unable to contact me if they need to .
WiFi calling primarily uses UDP ports 500 and 4500 for secure IPsec tunnelling (IKE/NAT traversal) and often TCP port 443 for management, along with a range like UDP 16384-49327 for Real-time Transport Protocol (RTP) voice data, though specific ports can vary slightly by carrier, with older systems using SIP/TLS on port 5061. These ports need to be open on your router's firewall for Wi-Fi calling to work effectively.
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