Just noticed that the Genesys Cloud SIP trunk fails to register with our Zendesk Voice infrastructure, returning a 408 Request Timeout immediately after the INVITE.
The configuration looks correct based on the Zendesk SIP requirements:
sip_trunk:
host: zendesk-voice.zopim.com
port: 5060
transport: UDP
auth:
username: "zdesk_trunk_user"
password: "***"
Is the timeout related to UDP vs TCP transport differences between Zendesk and Genesys Cloud? We are using the default Architect flow for inbound routing.