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SuperUser
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Dying Gasp

It would be great to have the Dying Gasp functionality added to EdgeRouter and airMax equpment.  This would allow us to see when a subscriber drops offline due to power issues, vs something else and would greatly aid in troubleshooting.

 

A dying gasp is a message (or signal) sent by the customer premises equipment (CPE) DSL device to the digital subscriber line access multiplexer (DSLAM) when a power outage occurs.

 

https://community.ubnt.com/t5/EdgeMAX-Feature-Requests/Dying-Gasp/idc-p/2318480#M2720

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Re: Dying Gasp

Matt. This would require a battery in the equipment 

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Re: Dying Gasp


@mhoppes wrote:

It would be great to have the Dying Gasp functionality added to EdgeRouter and airMax equpment.  This would allow us to see when a subscriber drops offline due to power issues, vs something else and would greatly aid in troubleshooting.

 

A dying gasp is a message (or signal) sent by the customer premises equipment (CPE) DSL device to the digital subscriber line access multiplexer (DSLAM) when a power outage occurs.

 

https://community.ubnt.com/t5/EdgeMAX-Feature-Requests/Dying-Gasp/idc-p/2318480#M2720


As Claude said, it's a power issue.   If you just wanted the ER to send a message there might be enough residual power immediately (milliseconds) after a power outage to do that, but the radios use way too much power for that.   With DSL it's easy since the poweer needed to send the packet is very low - RF, not so much...

Jim

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Re: Dying Gasp

I'm not so sure this would require a battery. The EdgeRouter should be easy to do. The Radios I feel like it could be done with a slightly larger capacitor?
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Re: Dying Gasp


@mhoppes wrote:
I'm not so sure this would require a battery. The EdgeRouter should be easy to do. The Radios I feel like it could be done with a slightly larger capacitor?

Its hard enough that I don't see a cost benefit in trying to add large enough capacitors across the entire distuptively priced line to do this. 

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Re: Dying Gasp

Not all devices send that packet back. You can have it logged locally also...

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Re: Dying Gasp

True... even if we can't send it back... having it logged would be nice too.
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Re: Dying Gasp

[ Edited ]

Just a thought, if you really need to log power outages then you could hack together an RPi or Arduino device connected to a small rechargeable battery that you'd add to each site you need monitor. It can even have a GSM module if real-time info during outage is needed.

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