Browser based calls do not work in our office. Why?

If you're not able to get your browser calls up and running, please follow these instructions:

Step 1: Run CallHub Browser Check on your Chrome Browser from here: https://app.callhub.io/browser-check/

Step 2: If you have a firewall setup to filter traffic, then we recommend you to whitelist the following IPs in order to avoid any traffic blocking

SIP & Media Server IP Addresses

• 52.9.254.64/26
• 52.65.191.160/27
• 52.65.127.160/27
• 52.205.63.192/26
• 3.93.158.128/25
• 52.220.63.128/26
• 52.58.255.224/27
• 52.59.63.224/27
• 54.233.255.192/27
• 54.233.191.0/27
• 54.251.114.42/32
• 54.251.107.105/32
• 54.247.99.121/32
• 54.247.118.161/32
• 54.235.170.44/32
• 54.241.3.32/32
• 54.251.255.151/32
• 54.251.255.154/32
• 54.253.121.64/32
• 54.253.121.70/32
• 54.247.88.106/32
• 54.247.79.194/32
• 23.21.167.224/32
• 184.169.138.14/32
• 54.235.206.58/32
• 184.72.218.254/32
• 54.241.2.174/32
• 54.241.2.195/32
• 107.20.176.37/32
• 107.20.251.237/32
• 184.169.138.133/32
• 54.215.5.82/32
• 54.241.2.206/32
• 54.215.80.52/32
• 54.241.31.73/32

Step3: Configure your firewall to accept those IP ranges for the following Transports/Protocols:

• HTTP/HTTPS transports: allow traffic from these source IP ranges to access your HTTP (TCP port 80) and/or HTTPS (TCP port 443) web applications
• SIP Transport: Allow traffic from these source IP ranges and source ports UDP 5060, TCP 5060, UDP 5080, TCP 5080, UDP 5061, TCP 5061, UDP 5063, TCP 5063
• RTP transport: allow traffic from these source IP ranges to UDP port range 16384 to 32768