Understand the issue
Emergency responder radios may lose signal in stairwells, below-grade areas and dense construction. Commercial phone coverage does not establish whether those radios will operate.
What to consider
Identify the authority having jurisdiction and the radio-system operator. Confirm applicable testing, design, authorization, acceptance and maintenance requirements for the specific address.
Make the next step useful
Gather prior test reports and building plans before scoping a new assessment. This introduction is not a code determination: local adopted requirements and project-specific review control.