Protocol scope and method
This is a diagnostic naming helper, not a wire-protocol field or access credential.
streamKey = normalizedSIM + "-ch" + channel.
Common questions
Does the JT/T 1078 SIM & Channel Key leave my browser?
No application upload is used. Avoid putting sensitive production data in shareable URLs.
Is this a standards compliance test?
No. Confirm the edition and vendor profile with licensed documents and your target platform.
Offline diagnostic aid. Verify fields, version and vendor extensions before production use.