build a new asterisk server server version 20.15.1

setup a new asterisk hostname ukasterisk server version 20.15.1 Have a asterisk running old version and i used the sip to pjsip script and receive the below error in wireshark did i miss something in a config

SIP to PJSIP is not trivial or at least did not seem trivial to me. Took me quite a long time to get it working. I think these three threads contain what helped me get it working:

There is insufficient information to determine whether you should be trying to resolve ukasterisk.com on your Amazon server, or what is missing from your zone files.

Translating chan_sip configurations to chan_pjsip ones is really only difficult when you don’t understand how the configuration was supposed to work.

ukasterisk.com. is not a name that exists in the public DNS service:

; <<>> DiG 9.18.33-1~deb12u2-Debian <<>> SOA ukasterisk.com.;; global options: +cmd;; Got answer:;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 14466;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:; EDNS: version: 0, flags:; udp: 1232;; QUESTION SECTION:;ukasterisk.com.			IN	SOA
;; AUTHORITY SECTION:com.			886	IN	SOA	a.gtld-servers.net. nstld.verisign-grs.com. 1754605850 1800 900 604800 900
;; Query time: 47 msec;; SERVER: 192.168.1.1#53(192.168.1.1) (UDP);; WHEN: Thu Aug 07 23:31:24 BST 2025;; MSG SIZE  rcvd: 116

Your DNS system as fallen back to assuming it is relative to the domain of the local machine, and again failed to find it to be a valid DNS name. There is no evidence of any SIP activity, and you have provided neither logging from Asterisk, not the chan_sip and chan_pjsip configurations.

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