What are the required to Voxmeter VoiP Call

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What are the required 'to Voxmeter VoiP Call'?

  1. Network

See below for the protocols that need to be installed and available on the network for your phones to work properly and consistently.

Laptop/PC need to be able to initiate outbound TCP, and UDP connections to a range of Voxmeter IP addresses on arbitrary ports. In most cases, the laptop/pc initiates these connections from within home network. Any allow-list-only configuration on the firewall won't work. Please be aware that these are all destination ports that the phones send traffic to. The source port for these connections can vary by ISP (Internet Service Provider) vendor, solution, etc. Any firewall determinations based on source ports are very problematic. We strongly recommend allowing all traffic to and from our IP Blocks. Here are the specifics:

  • Persistent NAT connections — Our system sends NAT keep-alive every 30 seconds.
  • HTTP (TCP port 80) and HTTPS (TCP port 443) for access to https://voxmeter.catglobe.com
  • SIP (UDP ports 4569) — Multiple connections must be allowed over these ports.
    • Use TCP port 4569
  • All internally-initiated UDP connections to ports 10,000-65,500 (RTP).
  • TCP on ports 1723 Only required for Interviewer who got blocked traffic on RTP (1way sound problem). Voxmeter technical team need setup VPN on Interviewer endpoint.
Protocol
 Port Number(s)
 Direction Access Type
 Comments
TCP
 80,443
 Outbound Web client
 Web browser (Firefox, Chrome)
UDP
 4569
 Outbound SIP Signaling
 SIP client (Microsip, Zoiper,Telephony)
TCP
 4569 Outbound SIP Signaling
 SIP client (Microsip, Zoiper,Telephony)
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