I guess that you used either Manual Configuration via MEBx BIOS module accessible via Control-P during POST or you created setup.bin file for USB configuration (done as well via MEBx FW during POST).
So Intel AMT is configured into Admin Control mode.
Unless KVM/IDE-R/SOL features were disabled in the ME FW they shall be accessible over Intel AMT Redirection port (16994 as you do not have TLS configured in such simple way).
The only thing you are missing is enabling (opening) AMT Redirection port listener.
You can do it via Manageability Commander Tool (or the latest Intel Manageability Commander) on 1:1 basis.
In Intel SDK (in folder AMT_SDK_18.104.22.168.zip\Windows\Intel_AMT\Bin\Ws-Management\C#) there is RedirectionConfig.exe tool you have to run it on management console with AMT Redirection Realm (or AMT adminnistator) credentials to open Intel AMT Redirection port, ex.:RedirectionConfig.exe -setsolinterfacestate true -host <hostname_of_AMT_system> -user <AMT_User> -pass <AMT_User_Password>
If you want to set other AMT settings (ex. Add AMT WiFi profiles or TLS) you may :
On AMT 7.x or newer systems (On Dell, Intel MB and Lenovo AMT 6.2 or newer) you may run Host Based Configuration on top of current AMT settings - download Intel SCS Configurator package from: https://downloadcenter.intel.com/download/25616
Use ACU_Wizard to create your Intel AMT settings (on any PC) save it to XML file and then on each Intel vPro based target machine you have to install full Intel ME SW (with Intel LMS service) and then run:
ACUConfig.exe ConfigAMT <your_AMT_Settings.xml> /AbortOnFailure /DecryptionPassword <XML_File_Password> /AdminPassword <your current AMT Administrator Password>
If you will install Intel RCS server then you can also re-load Intel AMT settings from Intel RCS server using:
ACUConfig.exe ConfigviaRCSOnly <your_RCS_FQDN> <your_RCS_AMT_Profile_Name> /AdminPassword <your current AMT Administrator Password>
Intel EMEA Biz
Client Solution Architect