Protocol scope and method
This is a diagnostic naming helper, not a wire-protocol field or access credential.
streamKey = normalizedSIM + "-ch" + channel.
Diagnostic scenario
Combine a redacted SIM digit string and logical channel exactly as used by the media session, preserving leading zeros. Compare the generated key with signaling, stream routing and storage logs to identify a mismatch between control and media paths.
How to interpret the result
The composite key is a diagnostic convention rather than a globally unique security identity. Different systems may include device, stream type or session state, so the local key format must match the target platform contract.
Input reference
- SIM digits
- Example default: Sample input included
- Logical channel
- Example default: 1
Common mistakes
- Using an unredacted production capture with vehicle, credential or network identifiers.
- Normalizing the SIM as a number and losing leading zeros.
- Treating a successfully parsed sample as standards compliance or interoperability proof.
Before using the result
- Confirm the protocol edition, transport framing and vendor profile before interpreting fields.
- Compare the exact composite format across signaling and media logs.
- Keep a redacted known-good and known-bad sample as a regression pair.
Questions to check during diagnosis
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.