What Voxter IP addresses and ports should I whitelist on our corporate firewall?
- The easiest option is to whitelist Voxter's Global Network: 220.127.116.11/21, 18.104.22.168/28
- In conjunction with the Voxter global IP network, if you need to get more specific, then you will need to (at a minimum) open the following UDP ports for registration and phone calls to function:
- SIP Signalling Ports: UDP 5060 & 7000
- RTP Audio Port Range: UDP 16384 - 32768
- Provisioning of phones: TCP 80 & 443 outbound
- DNS & NTP: UDP 53 & 123 outbound