This tag is for questions about a network interface for analog lines such as “56k” or DSL on phone lines, as well as for mobile network data service clients.
Related tags
network-interface, mobile, telephony
Questions tagged [modem]
210 questions
4
votes
2 answers
How to send a file using xmodem protocol from the command line
I have a scope attached to RX and TX lines of the serial port. If I do:
cat /dev/ttyS0
I get a steady stream of 'C' characters so the remote side is up and sending.
If I do:
cat {filename} > /dev/ttyS0
I get a burst on TX line w/o any protocol. If…
user58178
- 41
2
votes
0 answers
CDC device filename locked after modem power down
I have Linux machine (ARM based, built using Yocto, kernel 4.10) with modem connected using USB interface. Modem can be powered up or down using GPIO lines.
After powering modem, CDC device file is showing up. I can communicate with modem without…
Arek Marud
- 21
0
votes
1 answer
Making a 64 modem pool work on Ubuntu
I have a 64 port siemens wavecom modem pool connected via USB to a Computer running Ubuntu. I am trying to create a python script that interacts with the modems for some automated testing project but Ubuntu can only detect 32 devices. Is there any…
jrosslee
- 1