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OP, icecreamguy posted a link to another thread where there is a fair amount of troubleshooting explanation there. It will help you.

Though if you want my best-guess then I would put $10 on the ADSL dropping during the download and having issues retraining to the DSL. Often, ISPs want to "show off" and give their customers the absolute fastest speed internet that they can at the cost of stability and reliability. My bet is that, during the download which slams the line, the modem is losing sync with the line frequency. This then causes the DSL interface to restart and a flashing light should indicate this on the modem. Once it has retrained, the flashing light should remain solid and depending on how your ISP provisions your service will depend on what your modem does next. Usually, the modem will login to the ISP and obtain an IP address from the ISP.

If you have a noisy line, there could be interference causing an issue. You can often listen to this noise on ADSL lines by plugging in an analog telephone. Dial a single number so that the telco stops playing dial tone. You shouldnt be able to hear anything really but any hissing is noise. This is why the ISPs often reply to ADSL internet issues by asking "is the modem plugged into the master socket" as often the master socket in the home is extended internally and wiring gets knocked by vacuum cleaners etc or are just installed poorly.

The other bet I would hedge for $5 would be that the modem is not that great spec, has low CPU and memory resources or software bug and the whole device is either locking up or crashing, forcing a reboot. This will cause added down time because the modem takes time to restart and load the software and only after a completed boot will the DSL line go through the sync process and subsequently log into the internet line.

If you are fine to keep a wired connection, then it will help rule out wifi drops also. I suggest to check the link on the first reply because it (hopefully) will guide you through some easy troubleshooting steps that will usually confirm where the issue is. 

Cisco has a weird policy. I was unable to use my gmail account as my email address and I dont have a private domain.

So here's the story:

- assigned my personal account to my employer company back in around 2014
- after this we became a Cisco partner
- Cisco wielded their almighty hammer, I had to use the company email address for the account. In hindsight this must be due to becoming a cisco partner
-- "partner resources" now showing under my personal account which was using a @domain of the company as a sign-in
- I was departing this company so I updated the email address to that of the new employer
- I then left that employer and went over seas
- I then lost access to the account because I no longer had access to the email address


So at this point I contacted Cisco to explain. I needed to do something because I had to book an exam in the following few weeks. Cisco informed me that my only option was to create a new Cisco account. I didnt like it but I was unable to fight Thor with a plastic keyboard. I booked / passed the exam and I have a personal account registered to my gmail so those boxes were ticked again and I was happy with that regard.

But get this;

I'm now back at company #2. I tried logging in to that Cisco account and:
a) I can log in
b) it's still associated to the company
c) it's still associated to my CCO ID, and all my certifications and exams are displaying there including the exam I passed overseas
d) it does still have the partner resources link (even though I'm not in a position to manage the company's partner status (I havent even clicked around to find out what options are available, I just notice the "partner" link showing up.


Nothing is broken, so nothing needs fixing... I think. But I have 2x Cisco logins that show up my certifications. I suppose, I actually only have one login (the gmail one) and the other is tied to the current company that I work for and when I depart I'll just forget about the account associated to my employer. But I suppose, technically I can associate the gmail account to another employer simultaneously - not that I'm going to attempt that, but it's an odd situation.

[How to find the IP's:]

what are you pinging?  it sounds like you are losing your default gateway, and cannot route,  are you pining the next hop IP or something else on the internet, try ping next hop IP if you are pinging something else.  you can also use traceroute to figure this out. traceroute to 8.8.8.8 or something like that.

The IP address which is returning destination unreachable is pingable. Trace Route is returning host unreachable. What exactly is causing this issue ?

If you ping say, 7.7.7.7 and an IP (not 7.7.7.7) replies to say destination unreachable, this can be an indication that the device which is replying does not know how to route to the destination and your traffic has gone as far as at can go, and no further. For example, next hop is down or link down from that device which sends the "destination unreachable" message.
You will also get something like this at home if your local internet is down and your local modem/router has lost its upstream route (ie internet connection). But you will also get this reply from internet routers that are routing global internet traffic.

You shouldnt need to reboot your machine to fix internet issues. I think that the fact you sometimes need 2 reboots to resolve the issues suggests to me that the actual reboot is not doing anything positive for you except consuming time, long enough for the (intermittent) issue that you are seeing to go away. Though, reboot can clear cached entries for some things so can actually help when it is those cached entries being the issue (ARP table for example).


When I come across problems like you described in your first message I always default to a process which works for me. In summary, I would set up multiple simple ping tests in the first instance and leave them running until the issue is encountered. As soon as the issue starts, glance at all of the ping tests and note which ones are no longer receiving ping replies. It's key to have significant devices being "pinged" and very quickly be able to check on them during the issue to get insight.
Therefore it should be clear that the "significant devices" is the important factor here and here is the list that I recommend:

1. your local default gateway
2. your local default gateway's default gateway (this is the ISP upstream router in their network and is your routers gateway to the internet, ie your routers next hop - this IP may change over time)
3. A couple of different stable IP's on the public internet - 1.1.1.1 and 8.8.8.8 should be good enough, these are public DNS servers
4. Your assigned DNS server(s) if DNS is not pointing to your local gateway (point 1) else dont bother with this if the IP is the same as point 1.

How to find the IP's:
To find point 1, you will open cmd.exe on your computer and run "ipconfig /all". You will see "Default Gateway" listed there. If a lot of output is making it difficult, use this command to filter based on Default Gateway:

Code Select Expand

ipconfig /all | find "Default Gateway". You can run a trace route instead to get this IP as a second option. Try "tracert -d 1.1.1.1" and a list of IP addresses will be returned. The first IP (ie the first hop) should be your default gateway which should also be your local modem/router. The 2nd IP listed should be the upstream ISP router.

For point 2: see the "tracert -d 1.1.1.1" output and the IP which you need is the one listed after your default gateway IP. A few assumptions being made here but I expect this IP is somewhere within your internet providers network. You need this IP because you need to later on see if the internet outage you keep having is because your actual internet connection (not wifi) is dropping out.

For point 4 (3 is already explained) you can look at "ipconfig /all" again and find DNS Servers.


How to run the simultaneous pings:

Now you have a list of IP addresses noted, open up a cmd.exe window for each IP address. Ie, 4 IP address needs 4 x cmd.exe.
In the first window, run "ping -t [gateway ip]". So if you have ip 192.168.1.1 for the gateway then run "ping -t 192.168.1.1" and press enter. This sets of the ping tests and continues pinging indefinitely each second or two. Position this somewhere on the screen that can be seen and not covered over by the other cmd.exe windows

Repeat the above for all of the IP addresses so that you have a set of windows running pings.

Now all you need to do is wait for the issue to occur again and then take a look at the windows and note which ones are showing "timeout" instead of "reply". Then you can match what you actually see to an expected experience below:

Expected experience:
This is where the network diagram comes in very handy. But let's assume you have a basic home network that the majority of people will have when they sign up to $ISP and the ISP sends them a modem to plug in without any guidance with regards to wifi design (physical location, location with regards to other radio sources, radio strength, radio channel, number of devices, antenna positioning etc).
Assuming you have a common simple network, the diagram would be like this:

Desktop computer -> plugged into router -> Internet (Cat6 copper ethernet cable connecting to FttP NTE (basically fibre run inside the home and a shoe-box side wall box to convert from fibre to ethernet cable))

If your internet connection is dropping, for example dodgy connection with the fibre or copper or it's xDSL and the signal sync is dropping and causing the modem to re-train (lights on the modem will indicate this in most cases with a flashing DSL light which will go solid (not flashing) when it has re-sync to the line and internet should be working shortly after) - if this is occurring then your ping windows will show:

1. gateway - consistent ping replies
2. ISP - time out
3. Internet IPs - time out

If it's the local connection between your computer and home router then you would expect to see:

1. gateway - time out
2. ISP - time out
3. Internet IPs - time out


You'll probably find that the IP being shown in those messages that you see "reply from x.x.x.x destination unreachable" is your local modem or was discovered with the trace.

EOL notice:
https://www.cisco.com/c/en/us/products/collateral/unified-communications/ata-190-series-analog-telephone-adapters/eos-eol-notice-c51-741354.html

Great! Thanks for posting back because this was new to me. Glad you got going 

In the only instance of having to do this, I scoured the software downloads section of the device in question and located the SMALLEST image size that I could load onto the device to get an active image to run. And then from there, log in the usual way (eg telnet) and load the image that I actually want to load. Dean refers to this when he says "old image".

Perhaps, there is not enough flash: space for the image which you are trying to load.

How big is the image which you are trying to load? Is it around 20 to 25mb ?

Yes indeed. Though at that point I was just grateful it was fixed. It was not easy to make progress and with the ITSP and Telco inc. Microsoft stating that it was "normal and no issue, closing case" I was grateful to have made progress at all.
It did get to the point where I was leaning to move all of our impacted customers away from that design onto something that worked for them. Though we did a test and had intermittent call disconnects with another ITSP anyway, probably due to the same issue on the backend.

Just to add to Deans post,
It looks like you're wanting to call the LOGO device from the PC. But the issue you have is that the LOGO device has unknown IP info when it has an internet connection provided via 4G/5G.
What you'll need to do is get a small router with 4G/5G connectivity and then make an automatic VPN from this router back home to a device, like a PC or router. Then your PC will be able to access the LOGO device over 4G/5G via a private VPN

In the past Ive used the matchbox-sized GL-iNet routers from Amazon / China. They run OpenWRT and can utilise a 4G USB and launch an automatic VPN when it boots up. 

Just trying to remember this for my notes.
I found a old forum from I think 2016 where someone had this exact issue with calls dropping and were able to play around with their Audiocodes SBC to get it resolved. They posted that, forcing "transcode always" resolves the issue. As well as the other option "always send media during silence". Depending on the software version, the options are or are not available. I've never touched an audiocodes device so I'm not sure what the current software number is, but the post from 2016 was stating that v6.9 has "transcode always" but the "always send media during silence" is only available from v7.1+

Sort of found the links:
https://flinchbot.com/ucnow/index.php/2016/11/29/bt-sip-trunk-calls-dropping-after-2-minutes-on-mute/

Original website that hosted the forum is still down as it was back in june. So the only way I could view the content was to use the wayback machine:
https://web.archive.org/web/20161228204721/http://www.gecko-studio.co.uk/bt-sip-trunk-calls-dropping-after-2-minutes-on-mute/

I think what you are describing is NAC (Network Access Control). One open-source tool I know about that can help is packetfence.

I just picked up a personal 13" laptop new from HP direct from their website. https://www.hp.com/gb-en/shop/product.aspx?id=4S177EA&opt=ABU&sel=NTB
It has an OLED screen which I like but they're susceptible to screen burn-in so I am being careful with that (as well as a battery alarm that alerts me when my battery <25% or 65%> so I can manually unplug and keep the charge in this range. I have been doing this with my mobile phone for 2 years straight now and my phone battery condition is almost like out of the box new.

I recommend not having dual screens but instead go for a single, curved one like Samsung Odyssey. Go for one in the 30"'s like a 32-34". I have a 27" curved at home but planning to get one slightly bigger. IF you get a 4k resolution at 34" it's like having 4x1080p screens. With so much display area, no need to maximise windows. I find my productivity is better because I tried the screen like a vertical table and my windows are like resizable pieces of paper than I spread out where I need them to be. Not having a split/line down the middle of your view is handy, too.

As well as the screen, I recommend a usb-c dock of some kind. Either built into the monitor or a small one that allows you to simply plug in your laptop with a single usb-c cable. From this one usb cable you will get:
- display output to the screens
- charging/power for the laptop
- network connection

And then if you like, any other usb devices can be connected to the dock and then accessed over the usb cable. 

Uber are a bit of a joke of a company. Want to know how I know this? I've used their services, been a customer and tried to contact their support on numerous occasions to report issues (unsuccessfully). Their customer service is handled overseas and there is no ownership by support. So ignoring the customer complaint is the norm. I even reached out to the local country manager. Ultimately he couldnt help, either.

Though, I havent been contacted at all about this breach - maybe it affects only USA customers?

https://www.cyber.gov.au/acsc/view-all-content/alerts/optus-data-breach

Optus kept some customers data for 10 years
Drivers license records, medicare, passport numbers disclosed

Government stepping in to enable Optus customers to get new driving license numbers (previously not possible (WA), and in other states only possible if the user has been a victim (need to give over police crime numbers before getting a new license)

No, it's no-code

An example for IT admins:

https://tocalai.medium.com/power-automate-desktop-d7d11a2acfd1

Another one to create a teams chat from an email. This is really helpful. We had something similar for webex teams, very handy because sometimes email chains arent helpful to discuss things when a teams group would be more appropriate.