Phones forum


Dead Phones?

by Bizzlefluff / December 8, 2016 8:22 PM PST

So I've noticed that when calling blocked or unavailable numbers, the phone does one ring and then states that the number is blocked or unavailable. This, I'm assuming, is because the initial ring is the phone connecting to the PSTN, and it is only after the phone has connected to the PSTN that it recognizes the fact that the number is unavailable or your phone is blocked, etc.

However, I've also noticed that when calling a dead phone (no battery), the phone goes directly to voicemail. My question, then, is how does this happen? Am I getting something completely wrong here, or does the phone have a way of instantly recognizing when another phone is dead?

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Clarification Request
by Pepe7 / December 9, 2016 8:51 AM PST
In reply to: Dead Phones?

The system reaches out and 'polls' the network, looking for the respective connected/device associated with that phone #. If no return signal is received by the network/system provider, it goes to VM for the caller. The system cannot connect to a phone that is not turned on(!) Wink

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But How?
by Bizzlefluff / December 11, 2016 8:16 PM PST
In reply to: Simple

But how can it poll the network if it's not yet connected to the network?

All Answers

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This is no easy answer.
by R. Proffitt Forum moderator / December 9, 2016 12:02 AM PST
In reply to: Dead Phones?

Because each carrier may do this differently. So each system can be different there is no one true answer.

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