3
votes
Accepted
Do modems have public address?
No, per definition. The Modem is classically NOT PART OF THE IP SPACE. It is a modulator/demodulator working on some lower level transforming a bitstream into a wire level format.
Whatever is behind a ...
- 51.9k
3
votes
Accepted
Modem for optimal Wi-Fi router placement
You're fighting physics here, and you're not going to win. Various regulatory bodies limit the Tx power of wifi gear, so there's not a whole lot of room for improvement there. Remember that RF power ...
- 110k
2
votes
Accepted
how to make sure modem is truly in bridge mode
You need the read the manual for your modem
You can often connect to a modem that is in bridge mode following the user manual's instructions to verify it's settings.
Try connecting it to a PC/...
- 6,330
2
votes
Accepted
Linux pppd fails but NetworkManager works
So after searching long and hard, I finally added "+ipv6" to my ppp options file, and everything started working. Now to figure out and understand why that option is required!
- 41
2
votes
Accepted
PPPD refuse to work with Sierra : HL7690
I have found any workaround. The tricks is to use the PDP context 2 instead of PDP context 1.
Change the command :
pppd /dev/ttyACM2 115200 debug kdebug 1 nodetach noauth defaultroute usepeerdns ...
- 121
2
votes
How to get my fax modem to work with newer phone lines (and HylaFax)
This is a common problem with old phone devices (your modem) and newer telephone company hardware: the type of hardware provided by the telephone company doesn't provide enough ringing voltage for the ...
- 23.2k
2
votes
Accepted
USB Modem soft reinitialization
You could try unloading & re-loading the kernel module responsible for the modem's /dev/ttyUSB* device(s).
If that does not help, you might try uhubctl: a program that can control the per-port ...
- 4,618
2
votes
Accepted
How to access the page of a bridged modem with a different default IP from the router?
You had an IP conflict: both routers had the same IP. After you changed your modem's IP, you placed it in another network: a netmask of 255.255.255.0 indicates that all devices in the network have the ...
- 5,928
2
votes
Accepted
Hook second router to internet wirelessly?
The feature you need is called WDS. Its implementation is, however, specific to each vendor, so having two different brands won't help.
If WDS fails, try your luck with setting up two wireless modes ...
- 275
2
votes
Do modems have public address?
A modem is a device that convert digital signal to an analog signal. It doesn't have an IP.
If you have a xDSL line, on your end, you likely have
A modem, converting the analog signal transmitted ...
- 9,653
1
vote
Connecting iPad Pro to the internet via Ethernet
169.254.xxx.xxx is a self-assigned link-local address that you see only if IPv4 address assignment via DHCP was not successful. Read it as “nobody has assigned me an IPv4 address”.
I suspect one of ...
- 1,011
1
vote
Accepted
ISP configured Dynamic IP is different from what websites see when I access them
The 100.64.0.0/10 subnet is Shared address space
Not a valid public IP address, if you try to connect to that address from the same ISP it might work, but it is not globally routable.
The reason for ...
- 1,306
1
vote
How do I hook up a business modem with 6 ports to a switched network?
You use a proper router, that you own and/or can configure, and assign your public IPs using that and NAT everything else.
The modem should just be a modem at that point.
- 36.3k
1
vote
Permission denied in Kannel server
I already solve it
The serial port, where the modem is, has permissions for the dialout group.
# ls -la /dev/ttyS*
crw-rw---- 1 root dialout 4, 64 jul 21 17:48 /dev/ttyS0
crw-rw---- 1 root dialout 4, ...
- 13
1
vote
Accepted
High ping latency over direct Gigabit Ethernet link on Enterprise-class hardware
Defective Comcast modem, as @Appleoddity mentioned. Only solution was to have it swapped out. This post, linked to their community board, helped convince them all the homework had been done. So no ...
- 396
1
vote
Got a second modem, is my setup correct?
Your setup is not OK as both modems are enabled in routing mode, you need them in bridge mode to prevent a double NAT issue. Call your ISP to make them work in the correct mode.
It should be:
[...
- 17.1k
1
vote
Linux pppd fails but NetworkManager works
With NetworkManager the ppp Connection Configuration is not stored with the common Network Configuration Scripts.
To debug the ppp Connection I used the nmcli Command in the System Console.
To do so I ...
1
vote
Accepted
PPP / 3G modem not getting an IP: No network protocols running
Using "sphone" in at+cgdcont works instead of "internetg"
- 121
1
vote
How to know if 2 ethernet ports of the same modem are separated?
I assume by 'connected' you mean it is basically a switch? Connect a different client to each end, give the clients IPs from the same subnet, check if you can ping client B from client A.
- 3,848
1
vote
Accepted
Is it possible to assign an ISP provided static IP directly to a computer that is wired thru a dhcp enabled router before jumping to the isp modem?
It's absolutely possible if the router is based on Linux and you have a way of changing its routing table. One key observation is that since we have very few addresses, we can't do the traditional ...
- 275
1
vote
Using modem for sending voice recording
In addition to the Perl module and script, Vgetty includes a Bash script message.sh which can similarly call out and play a message. It can be found in the mgetty_src_1.1.37/voice/scripts directory. ...
- 11
1
vote
How can I simulate a modem over a VOIP connection?
When this question was asked, there was no existing solution, but Vocal Technologies has a SAMS (SIP Analog Modem Server) which is what the OP was looking for. It is a purely software modem server ...
- 11
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