moodle self signed certificate

I have two servers: first is moodle server with https, second is openmeetings server with https, both has valid certificates. When I try invoke conference room in moodle i get error:

"
Array
(
[url] => https://10.170.0.6:5443/openmeetings/services/user/login?&user=admin&pass=***********
[content_type] =>
[http_code] => 0
[header_size] => 0
[request_size] => 195
[filetime] => -1
[ssl_verify_result] => 0
[redirect_count] => 0
[total_time] => 0.253757
[namelookup_time] => 2.5E-5
[connect_time] => 0.018627
[pretransfer_time] => 0
[size_upload] => 0
[size_download] => 0
[speed_download] => 0
[speed_upload] => 0
[download_content_length] => 0
[upload_content_length] => 0
[starttransfer_time] => 0
[redirect_time] => 0.25368
[redirect_url] =>
[primary_ip] => 10.170.0.6
[certinfo] => Array
(
)

[primary_port] => 5443
[local_ip] => 10.160.68.19
[local_port] => 50055
)

Fault (Service error)

Request OpenMeetings! OpenMeetings Service failed and no response was returned. Additioanl info:
Could not login User to OpenMeetings, check your OpenMeetings Module Configuration

My moodle plugin setup is working.

When I tried connect in http I got information I can't use camera and microphone and I should try https.

When I try connect in putty from moodle server to openmeetings server I get result that I am using self signed certificate.

When I change moodle setup from https to http I am getting empty iframe.

Both servers are added to company's dns.

how make it work??

when I am using https I checked openmeetings log and I saw that moodle server got 400 html status from openmeetings server. Wqhen I switch to http moodle server receive status 200.