Read UPGRADE.TXT in v13 and v16. Then read it again.
I upgraded from Asterisk v11 to Asterisk v13. Once all issues were resolved, then I switched to PJSIP. Once all the issues with PJSIP were resolved, then I upgraded from v13 to Asterisk v16. This was done over the course of about a year, but I was not in any hurry.
PJSIP configuration is fundamentally different chan_sip configuration. I don't recommend switching to PJSIP and upgrade Asterisk at the same time.
On 12/6/20 3:38 PM, the...@sys-concept.com wrote:
I'm planning to upgrade my asterisk-11.25 to ver. 13 or should I go to 11 to 16 Is there any official documentation how to upgrade, what to watch for during upgrade?
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