The sip provider is saying an asterik error on their end. The inbound call just gets a fast beeping.
Here is an error log
04/16/2021 11:56:31 PM - [CM102001]: Authentication failed for AuthFail Recv Req REGISTER from 5.253.206.230:28686 tid=903b4f08-9776-482f-a1df-e564409b3874 Call-ID=lspcescxygusgmrmnjmqitbkokrsfkbkbydabtwmvplncdmvmu:
REGISTER sip:74.114.232.226 SIP/2.0
Via: SIP/2.0/UDP 10.10.10.16:28686;branch=z9hG4bK903b4f08-9776-482f-a1df-e564409b3874;rport=28686;received=5.253.206.230
Max-Forwards: 70
Contact: <sip:
[email protected]:28686;rinstance=42871f71159f7a44>
To: "216"<sip:
[email protected]>
From: "216"<sip:
[email protected]>;tag=sajgbqqf
Call-ID: lspcescxygusgmrmnjmqitbkokrsfkbkbydabtwmvplncdmvmu
CSeq: 2 REGISTER
Expires: 3600
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
Proxy-Authorization: Digest username="216",realm="3CXPhoneSystem",nonce="414d535c168afb7f75:279ea8aa1ec53ceaf0013e9cb46ef88e",response="7c6f85998f9d90ca2ffd84ad1dc99070",uri="sip:74.114.232.226",algorithm=MD5
Supported: 100rel
User-Agent: PolycomVVX-VVX_401-UA5.4.1.18405
Content-Length: 0
; Reason: Credentials don't match, check that authorization-ID and password match the ones in extension settings
04/16/2021 11:56:31 PM - Endpoint Extn:216: the request from external source 5.253.206.230:28686/UDP fk=880 tgt=is blocked. Reason: the extension is configured to block external registrations.
04/16/2021 11:56:31 PM - Got REGISTER for foreign registrar: registrar host <sip

74.114.232.226:0/UDP> is not mine!
04/16/2021 11:56:14 PM - Got REGISTER for foreign registrar: registrar host <sip

74.114.232.226:0/UDP> is not mine!