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Agents you build on Wixzel Voice place and answer phone calls over a SIP trunk you bring, and Vonage Programmable SIP is one of the carriers that works with it. Vonage bills you for the trunk and the minutes at your own rates; the voice engine is billed per second of actual usage from your Wixzel Voice balance. This page covers where Vonage keeps each setting. The steps that are the same for every carrier, and the troubleshooting list, are on SIP trunks.
Allowlist 95.216.218.102 for outbound calls, and send inbound calls to sip:95.216.218.102:5090. Every trunk returns both as platform_ip and origination_uri, so read them from GET /v1/sip-trunks rather than trusting this page to stay current.

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How do I connect a Vonage SIP trunk to Wixzel Voice?

Vonage has two different products with SIP in the name. Programmable SIP is the one that behaves like an elastic trunk; the SIP Dashboard manages trunks and their settings.
1

Create the trunk and open its Settings

The SIP Dashboard has separate Outbound Calling and Inbound Calling sections on the trunk.
2

Add an Access Control List

Vonage calls the allowlist an ACL, and it accepts single addresses or ranges. Add 95.216.218.102.
Vonage publishes its own IP ranges for the traffic it sends you. Because Wixzel Voice only accepts SIP from endpoints matching a trunk you have configured, there is nothing for you to open on our side. If your own firewall sits in front of anything else in the path, that list is the one to allow.

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What if a Vonage call does not connect?

Work through When a call does not connect, and start with Vonage’s own call logs: they show whether the call reached Vonage at all and how Vonage cleared it.
  • SIP trunks: the allowlist, the inbound address and the troubleshooting list that apply to every carrier.
  • Quickstart: connect the trunk, register a number, create an agent and place a first call.
  • Vonage SIP trunk setup: the short version on the Wixzel Voice site, with what a minute costs on each voice engine.