ERS3549GTS VLAN settings

[hayashi3]

I have a question about VLAN setting of ERS3549GTS.
I couldn't figure it out by looking at the CLI reference.

Q1.vlan port [port number] pvid [vid]
・"pvid = Port VLAN ID (native vlan)"
Is my understanding correct?

・Assuming that the following settings are reflected.
"vlan members 100 1", "vlan port 1 pvid 10"

Then, which port communicates with VLAN-ID 1 or 10?
below, Is my understanding correct?
untag VLAN-ID 1: OK
untag VLAN-ID 10: OK
Tag VLAN-ID 1&10: NG

Q2.
Suppose you have reflected the following settings:
"vlan ports X tagging untagPvidOnly"
"vlan members X add 10,20,30,40"

At this time, since pvid is not set, will pvid be 1?
To begin with, I don't understand the difference between "tagALL" and "untagPvidOnly".

Q3. vlan ports [port number] tagging tagAll filter-untagged-frame enable
I don't understand the intent of this command.

What is the best method in writing call data to the AES to be used in CTI in Orchestration Designer
I have variables that get collected in OD and when I transfer the call to an agent I want to pass those along with the call so the CTI will use them.

Any single answer is welcome.