The move comes just after China had stopped purchasing American agricultural products, a response to the Trump administration's latest round of tariffs on Chinese imports.īloomberg reported on Thursday that the White House had been delaying its decision to issue licenses to American business that wish to work with Huawei following its blacklisting in May. In the wake of Huawei's announcement, President Trump said on Friday that the United States will cut its ties with the Chinese tech behemoth. The launch comes as Huawei remains on a blacklist that prevents it from working with American software giants like Google.
On Friday, Chinese tech giant Huawei unveiled its new HarmonyOS software - an operating system for its upcoming electronic devices. I've tried to apply even such approach, with no luck.Account icon An icon in the shape of a person's head and shoulders.
By looking at the result of the AT^CVOICE? command, such parameters should be applied also in my case.Īlso, the same resource tells that "audio data should be fed to the modem audio port in batches of 320 bytes every 0.02 seconds". I found some resources on the Internet trying to explain, for similar devices, that audio has to be sent in mono, in digital frequency of 8000 Hz, and digitalized to 16 bit.
How can I save audio to file and send back audio from file? I know there are other similar posts trying to redirect microphone input and speakers output to the dongle, but my aim is to save the conversation to file (during a call, I tried to run cat /dev/ttyUSB1 > filename.raw, but the file can't be opened with standard software, hence, how can I convert it?) and, simultaneously, to send voice from file (which format? I tried to send back the filename.raw to /dev/ttyUSB1 with cat filename.raw > /dev/ttyUSB1, but the entire system gets freezed). In order to enable phone calls, I run the following commands: AT+CLIP=1, AT+CRC=1, AT+CNMI=1,2 on /dev/ttyUSB0.Īlso, if I run AT^CVOICE? I get ^CVOICE:0,8000,16,20.įinally, when I make/receive calls, I run AT^DDSETEX=2 on /dev/ttyUSB0 to enable audio forward to the /dev/ttyUSB1 port. I'm trying to use the device to make and receive calls.įor my purpose, it is needed (i) to save audio of the call to file and (ii) to send audio to the telephony call from an input file.Īs far as I understood (I can't find any official guide), the E173 dongle sets up three new devices (please correct me if I'm wrong):
I've got a Huawei E173 USB dongle connected to a Raspberry PI.
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