Upgrade distro

I have 2 production systems. Both running 6.12.65-32, FreePBX 13.0.163. One is running Asterix 11.19.0, the other 11.21.2. With PhoneApps and Endpoint MAnager

64Bit distros.

Endpoints are almost exclusively Mitel 6867i, using Chan SIP on port 5060. I want to upgrade to 10.13.66 with Asterisk 13. Is there a non-destructive way to that?

use our upgrade scripts as found here http://wiki.freepbx.org/display/PPS/Updating+FreePBX+Official+Distro

So if I understand right, I’d run the FreePBX Distro 6.12.65-100 (https://upgrades.freepbxdistro.org/stable/10.13.66/upgrade-10.13.66-1.sh) to take me to 10.13.66-1 and then install the 66-x upgrades one at a time.

Will this also take me to Asterisk 13 and how will it deal with my use of Chan SIP on 5060 as opposed to PJSIP on 5060?

yes this script will take you to 10.13.66-1 and will not modify your chansip/pjsip settings. you might want to consider switching to asterisk 13 before taking the leap to the new freepbx. also make sure any commercial modules have current licenses.