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Questions tagged [gsm]

The tag has no usage guidance.

2
votes
1answer
47 views

USB Modem soft reinitialization [closed]

I'm using an USB 3G/4G modem to access the Internet (connection with wvdial) but also to query my account usage, recharge and buy data offers with AT commands on the serial ports. Sometimes the modem ...
0
votes
1answer
132 views

Captive portal with local webserver and limited internet access

I have a mini pc running Linux. It has a 3G modem, wifi modem, runs nodogsplash for the captive portal, hostapd, dnsmasq, web server that gives out data that the user needs. I have the 3G device for ...
2
votes
1answer
1k views

PPP / 3G modem not getting an IP: No network protocols running

Modem in use: SIM5310 connected to an ARM based board. root@cm-debian:~# uname -a Linux cm-debian 4.4.0-cm-t335-5.1-00030-gd350d89-dirty #29 SMP Sat Nov 4 19:18:48 PDT 2017 armv7l GNU/Linux I am ...
-4
votes
1answer
217 views

Ping latency vs location on a map (x kilometer of a trip) | ping-latency vs distance

Orange is having problem delivering the internet between biggest cities (I'm traveling via train). There are white spots on the way... They do not see the problem, so I thought - lets make a chart ...
0
votes
1answer
4k views

SIP registration timed out

I am facing trouble in registering asterisk to sip trunk. When i do >sip show registry, it shows SIP request is send but never gets response back. I cannot even ping sip.flowroute.com. My firewall is ...
4
votes
4answers
15k views

Register asterisk to sip trunk

I want to register my asterisk server to a SIP trunk. I have added following piece of code in my sip.conf and extensions.conf sip.conf [general] register => myusername:mypassword@sip.flowroute....
1
vote
1answer
3k views

How to capture network packets that use SS7 protocol using Wireshark?

Since SS7 protocol stack is used in GSM mobile telephony network, we can't get the packets of SS7 protocols using Wireshark in Windows Computer and browsing in a web browser like Google chrome. So ...
0
votes
0answers
474 views

Asterisk/FreePBX: how to reject all incoming calls after few seconds?

I have 3 dumb GSM relays that control the gates. If a person whose number is in device's address book calls, gate opens. Call gets rejected (in my country calls that didn't connect or lasted less than ...
1
vote
2answers
236 views

Sending SMS from legacy system without the option for physical sms/gsm modems

My problem is that there is a legacy system for building automation (ventilation, temperature, lighting etc) without the possibility for upgrades, that needs to send text messages through a connected ...
3
votes
2answers
724 views

GSM Modem for linux [closed]

I am looking for a GSM modem capable of sending SMS to be used in CentOS 5.3. In the other word, how can I make sure if a specific modem can be detected on kernel 2.6 before buying it.
2
votes
1answer
1k views

OpenVPN tunnel suddenly stopped working

I have OpenVPN tunnel established. It suddenly stopped to push data through it. Connection establishes normally, but i don't have ping from either side (second client works fine). I've checked ...
0
votes
1answer
1k views

Possible for Socket communication between 2 internet-connected GSM modems?

I have 2 internet-connected 4G modems connected to 2 separate computers and I'd like to send/receive data between them with sockets (UDP) using the modems' packet-switched 4G Internet connection, not ...
0
votes
2answers
335 views

Asterisk, GSM-FXO gateway example of usage

Can anyone explain where to use GSM-FXO gateway. I understand where to use GSM-FXS - for example to connect analogue telephone to gsm gateway. But do we use GSM-FXO to connect to two telephone ...
2
votes
1answer
46 views

Fedora 11, need help on how to read an incoming message automatically through gsm module in fedora 11

Im trying to access text message that comes from gsm module through fedora 11. I want to read the contents of the message and then use it to access the database which is scripted in MySQL((i.e) The ...
0
votes
2answers
2k views

Connect two PCs over GSM modems without GPRS

Is there a way to connect two PCs via two GSM modems without using GPRS ? Something like the good old hyperterminal over dialup or any way to make data calls from cell to cell.
2
votes
2answers
1k views

Connecting Mobile Phone For Sending SMSes From Ubuntu Server

I have an Ubuntu server and i have a SIM card (sorry for bad English) which has monthly 10,000 SMS . Now i need to send SMSes on my project. Is it possible to use my mobile phone (Nokia 5800 and USB ...
3
votes
3answers
4k views

How do I place a phone call via a GSM modem and play an MP3? (RedHat 6)

I have a USB GSM modem (HUAWEI E160). I got some software on a Windows laptop that lets me place phone calls and send texts via the modem, to regular phones. Is there any way to do something similar ...
3
votes
4answers
4k views

Find out why Linux chat script for ppp connection fails

I'm having trouble making a ppp connection over a GSM Modem. The Platform is an ARM based embedded device, running Debian Linux 5. The scripts worked before with this device, but not with the new ...
1
vote
1answer
991 views

Kannel in VirtualBox VM with iPhone as modem

I have installed kannel in a virtual machine (ubuntu 10.04). I did not change any of the default config and tested the fakesmsc. This work fine. When I plug my iPhone in USB, I do not see any /dev/...
0
votes
1answer
171 views

Asterisk Audio Drops During Default Voicemail Intro

I have a very basic Asterisk install that I'm trying to learn from, and I have a simple voicemail box setup. I see from the verbose logging that the default voicemail greeting starts to play (and I ...
0
votes
2answers
2k views

How to connect and use GSM Modem

I want to connect SMS message with GSM Modem (WAVECOM WMO2 Modem Series GSM 900/1800/1900). But I don't how to connect and use it. Could anybody guide to connect with this modem. I want to send SMS ...