Using Asterisk as a SIP extension

[mack.allison]

I have a need to use an asterisk machine as a simple SIP extension. Perhaps I don't understand which credentials I should be using.

My register string is: register => 16:authpassword@**********.ok.3cx.us:5060

where 16 is the extension number and authpassword is the password at extensions > 16 > phone provisioning > authentication. The result is:

Got 404 Not found on SIP register to service 16@**********.ok.3cx.us, giving up

I have also tried registering using the auth username from the same field. Similar result:
Got 404 Not found on SIP register to service **********@**********.ok.3cx.us, giving up

Disallow use of extension outside LAN is definitely unchecked.
The results in the activity log are:

12/18/2020 3:25:24 PM - [CM102001]: Authentication failed for AuthFail Recv Req 
REGISTER from 12.244.83.202:5060 tid=08aac9c4 [email protected]: 
REGISTER **********.ok.3cx.us SIP/2.0 Via: SIP/2.0/UDP 12.244.83.202:5060;branch=z9hG4bK08aac9c4 Max-Forwards: 70 Contact: <sip:s@**********:5060> 
To: <sip:**********@**********.ok.3cx.us>
From: <**********@**********.ok.3cx.us>;tag=as5926ad20 
Call-ID: [email protected] CSeq: 103 REGISTER Expires: 120 Proxy-Authorization: Digest username="**********"
,realm="3CXPhoneSystem",
algorithm=MD5,uri="sip:**********.ok.3cx.us",
nonce="**********:**********",
response="**********" Supported: replaces, 
timer User-Agent: Asterisk PBX 13.14.1~dfsg-2+deb9u4 Content-Length: 0 ;
Reason: Credentials don't match, check that authorization-ID and password match the ones in extension settings

Any help would be appreciated.

Thanks,
Mack Allison

 

[leejor]

This might be of some help...
https://www.3cx.com/community/threads/connect-to-3cx-limited-options-for-credentials.62312/

Not having used Asterisk before, I don't know what fields you have to make use of.