Is it permissible to install an alarm system phone dialer at a location that requires you to dial a 9 first to get an outside phone line?

• A. No
• B. Only in residential properties
• C. Only with written authorization from a supervisor
• D. Yes

Answer: (D)

The key idea is that alarm system dialers can handle an outside-line access prefix. If a location requires dialing a code like 9 to get an outside line, the dialer can be programmed to automatically include that prefix before the actual phone number. In other words, the device simply follows the dialing pattern the system uses for that line, so the call still goes out to the monitoring service. That makes installing the dialer permissible, as long as the dialer is correctly configured for that specific line (and any local line or PBX rules are respected).