When Omnilert attempts to deliver a phone call via the Voice delivery service, the system will record the results of the call in your Message History.
Successful calls will be recorded as either "Human Answer" or "Answering Machine", as the system attempts to detect whether a person or a machine picked up the call. The system will make a best effort to leave a message on answering machines and voicemail.
Unanswered calls ("No Answer" or normal "Busy") are retried up to 3 times at 5-minute intervals. (The interval is in place to give the line a chance to clear, of course.)
However, some calls simply cannot be completed for a variety of reasons, such as a bad phone number, downed phone line, power outage, or any other interruption in phone service to a phone line.
In the event that a call cannot be completed, the system will log information about the call some of the rejection errors you might see are:
- Operator: An automated operator intercepted the call. This is the familiar "*beep beep beep* We're sorry, the call cannot be completed as dialed...", which could mean many different things but typically indicates a bad phone number or a phone line out of service.
- Restricted or State Restricted: The number cannot be called as it's on a restricted "do not call" list.
- Fast Busy: The line was called, but returned a fast busy tone, which indicates that no path to call the number is available. The cause isn't known.
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