If helpful, Skyetel has been moving to new banks of IP subnets for redundancy, etc. that are different than the default SIP trunks in IPBX2027. They also suggest using PJSIP two create just two trunks this way – in & out.

Here are the added IPBX2027 steps I found to get the old disabled & the new two PJSIP trunks laid down/operational:

1) Disable old SIP Skeytel trunks

2) Add the following to the "/usr/local/sbin/iptables-custom" …

/usr/sbin/iptables -A INPUT -s 35.85.225.96 -j ACCEPT
/usr/sbin/iptables -A INPUT -s 3.99.65.224 -j ACCEPT
/usr/sbin/iptables -A INPUT -s 3.101.177.224 -j ACCEPT
/usr/sbin/iptables -A INPUT -s 44.199.94.192 -j ACCEPT
/usr/sbin/iptables -A INPUT -s 35.215.45.65 -j ACCEPT
/usr/sbin/iptables -A INPUT -s 35.209.126.210 -j ACCEPT
/usr/sbin/iptables -A INPUT -s 35.212.222.157 -j ACCEPT

3) "iptables-restart"

4) If you have a hardware firewall with say whitelisting, be sure to add these subnets & IP’s there as well of course.

5) Follow Skyetel’s FreePBX PJSIP trunk directions:

INBOUND: https://support.skyetel.com/hc/en-us/articles/4410765264791-FreePBX-13-Create-Inbound-Trunk

OUTBOUND North America: https://support.skyetel.com/hc/en-us/articles/4410672050967-FreePBX-13-Create-Outbound-Trunk-for-North-America

6) Create or change your Skyetel "IP Authentication -> IP Group" entry to use 5061 rather than 5060 to connect

That’s it, and only two trunks using latest Skyetel infrastructure. Not hard to sort out, but thought couldn’t hurt to add here to save anyone time possibly needing it.

Feel free to delete my previous comment, my old brain confused the ip and login with the proxmox install I did at the same time.

Sad to admit that I was first using Ubuntu desktop or doing stuff on the hypervisor shell 🙁

I reinstalled all using Ubuntu Server the current lts is 22.04.5, setup of SSH on track with your guide except as you noted about some cloud providers versions, after editing sshd to allow root and passwords, I could not login until doing the apt-get update/upgrade and a reboot.

Thank you for all you contribute to the PBX/VoIP scene, I appreciate all the hard work.

Dave

Confused – so are we likely to see the 2027 release on the Raspberry Pi platform any time soon.

[WM: Stay tuned.]

[WM: Native faxing went away with FreePBX 16 which required PHP 7.4. AvantFax was stuck at PHP 5.6. Lots of inexpensive fax solutions are out there.]

[WM: The Ubuntu ISO also is available from us at SourceForge.]

[WM: You’re posting in the tutorial for Ubuntu. Assuming you meant to post in the Rocky tutorial, the answer is that neither CentOS 6 or 7 is supported. You must deploy Rocky 8 or AlmaLinux 8 before proceeding.]