Wifi Calling Issue

Forums › 2degrees (including Slingshot, Orcon, Flip, Stuff Fibre, MyRepublic, 2talk and Vocus) › Wifi Calling Issue

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Uber Geek

#2245434 25-May-2019 16:27

I think there is a slight delay with wifi calling. I did a test call now over same wifi network from iPhone to a Huawei P30, took about 3 seconds before iPhone had the dial tone and then another 2 sec for the other phone to start ringing.

Linux

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#2245445 25-May-2019 16:56

Think they meant delay in voice not call setup

CYaBro

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#2245446 25-May-2019 16:57

CYaBro:
Linux: Just cause the iPhones don't have any other Wi-Fi issues means nothing as Wi-Fi calling sets up a VPN back into the 2degrees IMS platform and the AP might be dropping this connection

There is more to Wi-Fi calling than you think

Yes I know that, just thought I’d mention that there’s no other wifi issues with the phones.
So where does one find that setting you mentioned on a unifi controller?

Nevermind, found it and have enabled it now so will see how it goes.

Will report back.

Opinions are my own and not the views of my employer.

Bluntj

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Ultimate Geek

#2245533 25-May-2019 21:09

tardtasticx: I think there is a slight delay with wifi calling. I did a test call now over same wifi network from iPhone to a Huawei P30, took about 3 seconds before iPhone had the dial tone and then another 2 sec for the other phone to start ringing.

That is the issue.

Bluntj

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Ultimate Geek

#2245770 26-May-2019 08:56

I am also getting this message quite a bit in the Fritzbox logs.....it was a copy and paste. I assume this is normal?

5-GHz band cannot be used for [number] min. because of check for higher-priority users (e.g. RADAR) on the selected channel (frequency [GHz])."

fe31nz

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#2246234 26-May-2019 22:57

Bluntj:

I am also getting this message quite a bit in the Fritzbox logs.....it was a copy and paste. I assume this is normal?

"

5-GHz band cannot be used for [number] min. because of check for higher-priority users (e.g. RADAR) on the selected channel (frequency [GHz])."

Quite a few or the 5 GHz channel frequencies are used for radar also, and it is a requirement of WiFi that is using those frequencies that they stop when they detect a radar in use. NZ has a law setting out those requirements. So if you have set your 5 GHz WiFi to use one of those channels, then you will see this happening. It is better to use the other frequencies not allocated to radar, unless you know you are in an area where those radar frequencies are not used. Or you can try just letting the router choose the frequency automatically so it can change frequency when it detects a radar. But it really is better not to interfere with the radars at all - we really need them to be working properly. Here is a table which shows the channel frequencies and how the channels are used when you use multiple channels (by setting your router to use greater than the standard 20 MHz bandwidth):

https://en.wikipedia.org/wiki/List_of_WLAN_channels#5_GHz_(802.11a/h/j/n/ac/ax)

All the radar channels are marked as "DFS" and should be avoided. As 5 GHz does not travel nearly as far through things as 2.4 GHz, you will often find that you can use the same channels as your neighbours without any problems, as long as both of you are only using indoor WiFi. With 2.4 GHz, you often need to avoid channels your neighbours are using.

CYaBro

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#2246236 26-May-2019 23:24

So after a day of having that setting enabled it hasn’t made any difference.
Wifi calling still dropping off and have to turn the wifi on the iPhones off and on again to get it going again.

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michaelmurfy

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#2246239 26-May-2019 23:37

CYaBro: So after a day of having that setting enabled it hasn’t made any difference.
Wifi calling still dropping off and have to turn the wifi on the iPhones off and on again to get it going again.

You running the latest UniFi controller version?

Under your wireless network settings for all SSID's ensure the following is enabled:
Enable Unscheduled Automatic Power Save Delivery
Connects high performance clients to 5 GHz only

Under the access point settings enable band steering to 5GHz is also enabled.

Also, for testing, create another SSID locked to 5GHz only. To do this just simply create a new SSID and under the access point settings itself disable it under the 2.4GHz band.

What router are you using also? I use this feature all the time on sites I've set up. I've even used WiFi Calling via Satellite in the middle of nowhere and never once had issues. All the issues I've seen have been caused on the clients side normally with misconfiguration of either their access point or their routers.

Also, despite me having near perfect mobile coverage at home I use it here also. I have multi-hour calls without any drop-outs and never once had a call not come through. I'm using an iPhone XS Max.

Michael Murphy | https://murfy.nz
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Opinions are my own and not the views of my employer.

CYaBro

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#2246297 27-May-2019 09:25

michaelmurfy:

CYaBro: So after a day of having that setting enabled it hasn’t made any difference.
Wifi calling still dropping off and have to turn the wifi on the iPhones off and on again to get it going again.

You running the latest UniFi controller version?

Under your wireless network settings for all SSID's ensure the following is enabled:
Enable Unscheduled Automatic Power Save Delivery
Connects high performance clients to 5 GHz only

Under the access point settings enable band steering to 5GHz is also enabled.

Also, for testing, create another SSID locked to 5GHz only. To do this just simply create a new SSID and under the access point settings itself disable it under the 2.4GHz band.

What router are you using also? I use this feature all the time on sites I've set up. I've even used WiFi Calling via Satellite in the middle of nowhere and never once had issues. All the issues I've seen have been caused on the clients side normally with misconfiguration of either their access point or their routers.

Also, despite me having near perfect mobile coverage at home I use it here also. I have multi-hour calls without any drop-outs and never once had a call not come through. I'm using an iPhone XS Max.

Thanks I've made those changes so will see how it goes today.

Unifi controller is running 5.10.20, haven't upgraded to 5.10.23 yet but did update the firmware on the devices the other day to the latest version offered.

We have no router as the WISP takes care of that with their Ubiquiti unit on the roof. We have no access to it.
They were the ones that recommended 2degrees for the wifi calling so I assume they, and other customer's of theirs, use it without any issues otherwise they wouldn't have recommended it.
We get around 10mbps down and 2mbps up.

When we're actually on a wifi call that connects correctly it works great and there are no dropouts, it's just when the iPhones are not in use that it seems to stop working.

Opinions are my own and not the views of my employer.

bagheera

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Ultimate Geek

#2246305 27-May-2019 09:38

have you patched the iphone? 12.3.1 notes say

Fixes an issue that could prevent making or receiving VoLTE calls

not wifi calling, but might use some of the same code.

CYaBro

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#2246310 27-May-2019 09:59

bagheera:

have you patched the iphone? 12.3.1 notes say

Fixes an issue that could prevent making or receiving VoLTE calls
not wifi calling, but might use some of the same code.

I thought I had but computer says 'no' so doing that now too, thanks!

Opinions are my own and not the views of my employer.

CYaBro

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#2247557 29-May-2019 09:50

Update: So after making all the changes suggested the wifi calling is better but it does still drop off but not as much as it was.

What also seems to be happening now is that at least it appears to reconnect by itself if it does drop off.

Had an example of this yesterday where my wife tried calling my mobile but it went straight to voicemail.
She then called the desk phone, which is a 2talk voip line, and we spoke for a couple of minutes.
While on this call my mobile got the SMS that I'd missed a call from my wife.
We hung up but then she forgot something and called my mobile again and this time it rang and we were able to talk on that.

So thanks for the suggestions, hopefully it continues to work in this better state now.

Of course no drop outs at all would be better again.

Opinions are my own and not the views of my employer.

CYaBro

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#2251259 4-Jun-2019 14:56

Just another update on this.

I found a generic wifi router in the cupboard (Netgear) which I setup.

I've been running my iPhone on this AP today and the 2degrees wifi calling hasn't disconnected once so it looks like it's an issue with the Unifi APs.

Going to have to do some more troubleshooting with those and see if I can fix it.

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CYaBro

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#2256520 12-Jun-2019 10:06

Another update on this.

Staying at my parents place where they have a nice fast fibre connection.

Asus router with wifi.

Wifi calling hasn't dropped off (that I've noticed anyway) and incoming calls ring but I can't hear the caller. They could hear me.

Switch off wifi and to connect back to cell signal and incoming calls work fine again.

So don't think this is an issue with the Unifi APs I have at home.

Looks like unreliable wifi calling service for issues to be happening in more than one location and on more than one device.

Opinions are my own and not the views of my employer.

michaelmurfy

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#2292634 8-Aug-2019 22:48

Just giving this thread an update.

I switched my wireless network from Cambium over to Ubiquiti (UniFi NanoHD and UniFi AC-Lite) and experienced WiFi calling issues - ended up missing a callout in the middle of the night and now owe my colleague KFC due to this.

There is something iffy with how I configure UniFi AP's it seems however when I get it working reliably I'll post my settings here.

In short - totally a UniFi issue I'm afraid - I tested with another AP and this didn't fault. Nothing else has changed on my network apart from the AP and this is when the WiFi calling issues started.

Currently, I've found the following settings to be somewhat stable but more testing will be required:

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