Teams Hotline (PLAR) Phones and Kari’s Law Compliance – Is Direct 911 Dialing Guaranteed?

We are reviewing Microsoft Teams hotline (PLAR) phones that automatically dial a non‑emergency number (for example, a security desk).

It is unclear whether all Teams hotline configurations allow a user to manually dial 911 from the phone.

Since Kari’s Law requires direct 911 dialing on MLTS endpoints, we’re looking for clarification on the following:

1. Are Teams hotline/PLAR phones guaranteed to allow manual dialing of 911?
2. Does this behavior vary by Teams certified device model?

Thanks in advance for any help.