Calls from a One NZ mobile to another One NZ mobile drop at the stroke of midnight every night

Forums › One NZ (including Farmside) › Calls from a One NZ mobile to another One NZ mobile drop at the stroke of midnight every night

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richms

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#3408174 28-Aug-2025 15:47

Bluntj:

The real beneficiary of doing this without informing their customers are One. They already seem to have the most expensive network charges.

Only if you are silly enough to pay them directly instead of using kogan or mighty mobile.

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#3408177 28-Aug-2025 16:25

From memory the call from the handy, would go to at least three towers, so if one is put is put in standby, is it signalling the other towers to pick up the traffic.

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freitasm

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#3408205 28-Aug-2025 17:30

TwoSeven:

From memory the call from the handy, would go to at least three towers, so if one is put is put in standby, is it signalling the other towers to pick up the traffic.

I think you are confusing a phone call with location triangulation.

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TwoSeven

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#3408216 28-Aug-2025 18:18

freitasm:

TwoSeven:

From memory the call from the handy, would go to at least three towers, so if one is put is put in standby, is it signalling the other towers to pick up the traffic.

I think you are confusing a phone call with location triangulation.

I don't think so. Used to be that cell towers were arranged in overlapping areas called cells (usually drawn as small hexagons between three towers), on call initiation, the strongest signal would prevail, but it gives the ability for handover if required. In this case, I would have expected a cell-tower initiated handover to occur - however, I think when a tower goes offline, I believe it is the job of the handy to do the negotiation.

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#3408221 28-Aug-2025 18:36

It is a hard shutdown instead of a soft shutdown or the calls in progress would hand off to another cell

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#3408352 28-Aug-2025 21:58

Linux:

It is a hard shutdown instead of a soft shutdown or the calls in progress would hand off to another cell

It’s a global best practice and most operators do it. Before shutdown calls would definately go through a process of calls being handed out to other coverage layers on site. In Nokia (one.nz use them) it’s called graceful shutdown. I also know power shutdown has been active for a few years now.

Suggestion is to reach out directly to one.nz to investigate your case further it may be a site specific issue. These days wifi also has green features (normally off by default) so do check that if either of you are on WiFi that its not a case of that kicking in.

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raytaylor

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#3409028 31-Aug-2025 17:08

TwoSeven:

From memory the call from the handy, would go to at least three towers, so if one is put is put in standby, is it signalling the other towers to pick up the traffic.

In this case the tower is not switching off, just certain radios on the tower, since there is less traffic it means it can all fit within the lower frequency bands and the higher / short range band radios dont need to be running

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SomeoneSomewhere

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#3409049 31-Aug-2025 20:41

I would have thought that doing the shutdown based on percentage load would be preferable over a strict schedule. Sometimes events happen overnight; some sites might be quiet during the day. Drop a radio when it falls below 10% load; restart it if the adjacent radios exceed 80% for 15 seconds.

Not handling the handover gracefully is a doh.

I wonder whether VoLTE makes this worse as presumably the 3G radios are not being switched, and perhaps the packet-switched nature of 4G/5G means they didn't consider an actual handover.

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#3409050 31-Aug-2025 20:43

SomeoneSomewhere:

I would have thought that doing the shutdown based on percentage load would be preferable over a strict schedule. Sometimes events happen overnight; some sites might be quiet during the day. Drop a radio when it falls below 10% load; restart it if the adjacent radios exceed 80% for 15 seconds.

Not handling the handover gracefully is a doh.

I wonder whether VoLTE makes this worse as presumably the 3G radios are not being switched, and perhaps the packet-switched nature of 4G/5G means they didn't consider an actual handover.

There is some logic. But that is very contextual and commercial sensitive.

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SimonOneNZ

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#3415047 15-Sep-2025 09:22

Hi everyone,

I wanted to provide an update for anyone following this thread.

In line with industry standards, One NZ utilises advanced technology on our 4.5G and 5G network equipment to optimise our mobile service. This includes a power-saving mode that operates overnight when customers aren’t using the network.

Our network is designed to hand off customers to another service layer, so live calls should not disconnect as a result of this.

Hi LurkingKiwi, if you're still experiencing issues, please feel free to send me a direct message and I'll be happy to look into your specific situation.

Cheers,

Simon.

MaxineN

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#3415050 15-Sep-2025 09:32

SimonOneNZ:

Hi everyone,

I wanted to provide an update for anyone following this thread.

In line with industry standards, One NZ utilises advanced technology on our 4.5G and 5G network equipment to optimise our mobile service. This includes a power-saving mode that operates overnight when customers aren’t using the network.

Our network is designed to hand off customers to another service layer, so live calls should not disconnect as a result of this.

Hi LurkingKiwi, if you're still experiencing issues, please feel free to send me a direct message and I'll be happy to look into your specific situation.

Cheers,

Simon.

Hi Simon (hope you're doing well, long time no chat).

Are you implying the network now does this? I remember distinctly this didn't happen when I was still around. There's a few INCs with my name on it discussing PWSM at large because it caused a few issues. Namely it didn't hand off before PWSM engaged so the UE just went "huh I have no service, time to reattach." One of them involved a medically dependent customer and their FWA service without fail would lose service at midnight and their medical alarm wouldn't check in, and a call out happened.

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LurkingKiwi

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#3424829 14-Oct-2025 11:16

I will PM Simon with my contact details (just saw that reply). I tried to ask One support about the problem but as it's a work phone they won't talk to me about it.

Further info:

Last night at midnight 13-14 Oct I was on a call on 2100MHz. Call dropped. My brother phoned back and it came up on 950MHz 3G! At the end of the call the phone switched to 4G 1800MHz.

I'm in Ascot Park in a bit of a valley and can only see one site I think.

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