Yes, mate of mine does that routinely.
Not usually. You normally need a router that supports 4G and put the sim into that.
Its normally better to leave the sim in the phone and just tether it using wifi when the adsl is down. That is what I do and it works very well. Only real downside is that it runs the battery down in the phone pretty quickly. Easy enough to leave it on the charger when its tethered and being used tho.
shove
Jolly good. B-)
A chocolate teapot would be more use than a 4G router around here.
I'll have to think about that. How do I "tether using wifi" the WAN ethernet cable from the firewall/server that is normally plugged into the ADSL modem. Hum has little Aldi plugin Wifi repeater/AP/client, bung it in client mode plug ethernet into it, hum... Phone could be placed where it can get a decent 3G signal without a CAT5, just PSU and mains.
Not sure what will get upset if the IP address's on the WAN side change.
They don't cost much from china.
Dangerous business.
You don't use the ethernet cable, you have a wifi on the PC or laptop, put the phone into tether mode, connect to that wifi that the phone becomes using the wifi on the PC or laptop.
Yes, you can do it that way or just get a dirt cheap wifi dongle if the laptop or PC doesn't do wifi already.
Yep.
Works fine for me.
Which, chocolate teapots or 4G routers?
The nearest 4G coverage to here is about 15 miles away.
And what about all the other devices that are on the LAN? Glances at
16 port gigabit ethernet switch with one free port, thinks of another switch elsewhere using one of those ports and the three devices plugged into that. OK not all of those devices access the 'net but about half do.Fine for that device but what about everything else?
The WAN port on the server/firewall has a statically assigned IP, in one of the non-routeable IP address ranges as this bit of network forms a DMZ between the ADSL modem and the firewall. Static because when things don't work and you are trying to work out why via ping etc that last thing you want is critical ports changing IP address.
Take out the ADSL modem and substitute a tethered phone, the servers WAN port now needs to be assigned an IP address in the same subnet that the phone is using for it's WiFi LAN.
Just played with the phone and tethering the tablet to it, that works, no suprise. And I now know what my phone calls itself and it's subnet but will that change next time I enable the Wifi hotspot? I can certainly alter the ADSL modem and server WAN port to use the same subnet as the phone (provided it doesn't change...).
As an interim solution it's workable but not in the longer term. I might actually want to use my phone or even go out...
It can be any G, but less than 3G is very slow.
They will still work fine if you have your LAN implemented properly.
The tethering is just for the net access.
Glances at
See above.
Mine doesn't without using a statically assigned IP.
You don't take it out, you leave it doing nothing because the adsl is down.
You don't do that either.
the servers
No.
No, it's the same every time.
Works fine if you implement it properly.
With the phone WAN connection now int to a random workstaion PC or Laptop? That implies you have to "share" that internet connction on that PC. I guess the windows firewall is reasonable but that would have to be turned on for that PC, I think. As everything is behind two layers of NAT I've not investigated firewall protection on individual work stations.
Not that any of the PC workstations have WiFi anyway, they are all on ethernet and which ever PC you choose would have to stay on. Another aspect to this backup is having it work under power fail conditions from a UPS, power budget becomes rather important.
because
address.
I don't think you have ever encountered fault finding on a system that is not using the defaults of the involved kit. Factory reset something and a second DHCP server pops up, it's then a race for which one allocates the IP address/subnet for a given bit of kit. Or the default IP/subnet is not what anything with a static assignment is using but anything under DHCP does work, except to the staticly assigned devices...
Without altering the default route somewhere packets will head off to the (now dead) ADSL modem not the (live) tethered phone. You can't have both live at the same time and connected into the LAN/DMZ with the same IP/subnet
What you can to is "take out" the ethernet cable from the ADSL modem and shove it into the WiFi client. Both devices having the same IP/subnet configuration but never physically connected to the LAN/DMZ at the same time.
You could have the psyical connections in place and switch devices on/off to the same effect but that isn't KISS for when one needs to talk someone through the change over from a 100 miles way. Moving a cable from one port on patch or from one device to another is SIMPLE.
That I will agree with, on a sample of two. Just as well or it would have made life a little more complicated.
So with the ADSL down and my phone tethered by WiFi to provide an internet connection to the home network. It'll still do that when I'm
20 miles away with my phone, neat trick.As I said interim it can be made to work. It just needs refining and at minimal cost. The TP-Link MR3020 travel router at about £20 plus a dongle, probably free with x GB of data and thus SIM for £10, fits the requirements hardware wise, pity the MR3020 doesn't do PoE though, of course PoE modules can be brought.
The data tarrif is probably the hard bit. Need to have say 10 GB of data for £10 that doesn't expire.
Not clear what you are asking there.
Yes, but you do that with the adsl service.
I don't.
I don't either for the same reason.
I didn't either, but it costs very little to add a dongle for just that failure of the adsl situation.
Mine aren't particularly with the laptops, I normally do use wifi with those and occasionally plug the ethernet cable in when I need a better thruput when say doing a full image to one of the desktop system drives.
True, but all that really means is that the only PC you are using in that situation and the phone need to be on.
I have actually.
I don't do that often enough to matter and its normally a foreign system that I do that with so that doesn't affect my own systems at all.
Not when you are just factory resetting just the one device.
Or
I don't have any of those.
I can and do and when the adsl comes back, just turn the tethering off and carry on regardless with no reconfig at all.
I don't do that. Just unplug the wifi dongle to stop using the phone.
With the laptops, when I change from using wifi to an ethernet cable, I don't have to do anything special, just plug the ethernet cable in.
Both devices having the same
Its easy enough to tell them to turn the tether on and carry on regardless.
Moving a
Even simpler to turn the tether on in the phone.
I never said that. You are free to take the phone away and leave the home network without any net service until the adsl comes back.
It costs very little to get a wifi dongle for the PC.
Cost much less for a wifi dongle for the PC and use the phone tethered.
I pay 5c/MB pay as you go for data on the phone because that works out best value for the way I use data on the phone normally.
If the adsl goes down for long enough to warrant using the tethered phone I just buy I 1GB datapack online for $10.
So the fallback costs me $10. Other datapacks are available if I plan to use more than 1GB which are better value.
Don't need to worry about the expiry because I only buy the datapack when the adsl is down and that only happens for long very very rarely.
Yes, with the right kind of router. Somthing that supports a WAN connection via USB and understands 4G dongles. My Vigor 2830 will do it.
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