Network & Troubleshoot
Fonzer’s statuspage
On the Fonzer status page you will find the status of our Cloud Communication platform and components, including maintenance updates and incidents. This page can be found through the following locations and links: Direct link: ...
WLAN Requirements for VoWiFi
RF signals are measured in units of “dBm”, with a signal of 0 dBm being the strongest, and signals of -100dBm and below being the weakest. As a general rule, VoWiFi should maintain: A minimum signal strength threshold of at least -67dBm. An SNR ...
What is SIP-ALG, what are the issues?
SIP ALG stands for SIP Layer Gateway. It is also called SIP helper, SIP service, SIP stack. SIP ALG is a piece of software in a router that modifies IP addresses to help incoming VoIP calls. Although SIP ALG is intended to help users with their own ...
Which IPs should I whitelist in my firewall?
If you use a firewall that limits access from and/or to certain IPs, please whitelist the IP ranges listed below for both TCP and UDP. Subnet Start IP End IP 185.19.236.0/22 185.19.236.0 185.19.239.255 Service Port number SIP 5060 UDP 5060 TCP 5061 ...