Forum Discussion
Microsoft Teams Direct Routing Outbound Calls not working (error 504)
Ok me and my carrier found the issue.
The DNS record for the SBC FQDN was not properly set, thus not redirecting to the SBC IP.
Off-topic question: How did you generate the report with the cause codes for the failed calls?
This part below, I have no idea how to do this and I need to know why some outbound calls are failing from my Teams Direct Routing environment.
My carrier's SBC is not receiving anything, and if I go to my PSTN direct routing report I get the SIP Error 504 "Unable to deliver INVITE: No such host is known" with the microsoft final code 569002.
Thanks
Joe
My-Username , you can generate the report at Microsoft Teams Admin Center > Analytics & Reports > Usage Reports > View reports > PSTN and SMS (Preview) Usage > Last 7 days > Run Report
Once the report gets generated, on the report, switch to the Direct Routing tab.
- Thank you, I hadn't dug very deep into that tool, it has more data than I realised 🙂
- If Teams outbound calls won't work, check if you can make calls via the Web App. Then, delete the app cache, reinstall Teams, and contact your admin. If you're an IT admin, be sure to assign phone numbers to users, and create a new voice routing policy.
Regards,
Rachel Gomez- Thank you for the tips 🙂 I'll keep them for future issues we have.
The issue turned out to be a config issue on our SBC. Somehow a few lines of config got lost between our test SBC and the production one.
