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wdoekes / asterisk-chan-dongle

chan_dongle channel driver for Huawei UMTS cards, works with Asterisk 14+
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Key press recognition #164

Closed AlexanderZhirov closed 1 year ago

AlexanderZhirov commented 1 year ago

I use the e1550 modem together with Asterisk 18.13.0. Incoming and outgoing calls and SMS work. How can I recognize keystrokes on my phone in Asterisk? Asterisk does not respond to keystrokes when I do it on my cell phone during a call.

AlexanderZhirov commented 1 year ago

It was necessary to simply switch the e1550 device to modem mode.

AT^U2DIAG=0
wdoekes commented 1 year ago

Cool. Thanks for reporting back.

AlexanderZhirov commented 1 year ago

Cool. Thanks for reporting back.

A small remark. Sometimes I have to physically reconnect the modem itself in the USB port. I took a note - first turn on the Asterisk - and then turn on the modem in the USB port. Otherwise, the modem loads faster and Asterisk behaves with it somehow wrong.

AlexanderZhirov commented 1 year ago

@wdoekes Sometimes, when configuring files, rebooting Asterisk, modules, DTMF support disappears. It is necessary to pull it out of the USB and plug it in again, or reboot the system, since only after that the DTMF from the caller to the modem starts working. It would be very useful to try to identify the cause. Any ideas?

AlexanderZhirov commented 1 year ago

Still, I think it's a problem with my Asterisk. I need time for testing. I will unsubscribe in the next few days.

AlexanderZhirov commented 1 year ago

Still, I think it's a problem with my Asterisk. I need time for testing. I will unsubscribe in the next few days.

Still checked and yes, the problem is, sometimes DTMF stops working when calling via dongle. After restarting the server, everything works fine. How would debug this whole thing? Any suggestions?

In the screenshot, a call from a cell phone to a modem. DTMFs are working now. But at some point they stop and errors about this do not appear.

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AlexanderZhirov commented 1 year ago

To summarize a little:

Three weeks ago I built Asterisk for Raspberry Pi 4B (Alpine Linux for Raspberry). I also use two E1550 modems. Throughout this time, there were no problems with DTMF. Most likely, on my previous PC there was a problem of USB forwarding to the virtual machine (I used an Asterisk machine in VirtualBox as a server), which contributed to failures. I think that was the problem.

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