Can't register T21P E2 phone

[rccloud]

I have same problem. I update firmware to newest version: 52.84.0.15

Previous phone: W56P works fine with sam credentials to asterisk.

Phone is working over openvpn ad i can ping asterisk from it - vpn is set.

Below is my log:

[2019-02-07 19:30:05] DEBUG[21643]: chan_sip.c:9409 __find_call: = Looking for Call ID: 0_3045589603@192.168.90.6 (Checking From) --From tag 1543403549 --To-tag
[2019-02-07 19:30:05] DEBUG[21643]: chan_sip.c:28642 handle_incoming: **** Received REGISTER (2) - Command in SIP REGISTER
[2019-02-07 19:30:05] DEBUG[21643]: chan_sip.c:28667 handle_incoming: Ignoring SIP message because of retransmit (REGISTER Seqno 1, ours 1)
[2019-02-07 19:30:05] DEBUG[21643]: netsock2.c:172 ast_sockaddr_split_hostport: Splitting '192.168.90.6:5060' into...
[2019-02-07 19:30:05] DEBUG[21643]: netsock2.c:226 ast_sockaddr_split_hostport: ...host '192.168.90.6' and port '5060'.
[2019-02-07 19:30:05] DEBUG[21643]: netsock2.c:172 ast_sockaddr_split_hostport: Splitting '192.168.20.1:5060' into...
[2019-02-07 19:30:05] DEBUG[21643]: netsock2.c:226 ast_sockaddr_split_hostport: ...host '192.168.20.1' and port ''.
[2019-02-07 19:30:05] DEBUG[21643]: chan_sip.c:3753 __sip_xmit: Trying to put 'SIP/2.0 401' onto UDP socket destined for 192.168.90.6:5060