Startech USB56KEMH2 and dreampi

[Zarper]

Not sure if this is relevant anymore, but I spoke with Startech support about the USB56KEMH2 to see if it supported voice.
They said that it currently wasn't supported but sent me a firmware that is supposed to add it and documentation about the chip that seem to confirm that all features needed should be possible. If you still have the device (or anyone else) and would like to try I have a link to the firmware.

You should probably just post the link regardless so its easily available rather than people having to contact support for it

I consider doing so, but since I wanted feedback on whether it works or not I figured I would have a higher chance if they responded first.

Damm - thanks for confirming this. Not the answer I wanted to hear but thank you for your help!

The startech site suggests that this was a hardware modem: https://www.startech.com/en-us/networking-io/usb56kemh2

I know some people have had success with CX93010 chip sets but I guess this is the CX93010-11Z chipset rather than the CX93010-21Z chipset (viewtopic.php?f=3&t=9861&p=95251&hilit=CX93010#p95251 viewtopic.php?f=3&t=10051&p=98666&hilit=CX93010#p98666 for example)

I assume I will need to get a new USB modem (ideally a Conexant RD02-D400 device)

Not sure if this is relevant anymore, but I spoke with Startech support about the USB56KEMH2 to see if it supported voice.
They said that it currently wasn't supported but sent me a firmware that is supposed to add it and documentation about the chip that seem to confirm that all features needed should be possible. If you still have the device (or anyone else) and would like to try I have a link to the firmware.

Yes I still have this device and would be happy to test. I got a Conexant RD02-D400 device in the end, so the USB56KEMH2 is just sitting around doing nothing...

https://startech.sharefile.com/d-s2e2e3cafe3a4c6aa
Here you go. Please report if it is successful.

[totalexile]

I've just given this a go and am pleased to report this does work. I can confirm that after updating the firmware I can now use my USB56KEMH2 with dreampi. The instructions need a slight tweak as the included version of xshell will no longer install and a few options have moved.

[Zarper]

That is very good news. It means that there is at least one new USB voice modem that is widely available and isn't excessively expensive.

[DavidCoq]

I have also purchased the modem and I have the same issue. Could you please provide a link to the firmware that is easily downloadable and describe the changes made to be able to use it?

[totalexile]

I'm afraid I'm away at the moment and can't seem to find it. I'll try and take a look when I'm back at home in a few weeks. I think it's on a hard drive I don't have remote access to. I'll drop you a message once I find it and post a link here.

[Zarper]

https://ufile.io/hf8svt6p

[DavidCoq]

Thank you for the link.
I have updated the modem firmware, but it still isn't working.
One question: when you start up the Raspberry Pi, does the modem's (OH) light stay on, or only when you're using it?

[Scrivani]

Thank you for the link.
I have updated the modem firmware, but it still isn't working.
One question: when you start up the Raspberry Pi, does the modem's (OH) light stay on, or only when you're using it?

Let me know if you want some help performing tests, better via discord.

Need to check if there is Voice support under FCLASS=8
And how your modem does the AT+VSM to send PCM 8bits audio

Better tests with minicom

[DavidCoq]

I tested the same modem on a virtual machine, and it works, but on Raspberry Pi 2 with Dreampi 1.7, it doesn't.
@Totalexile, did you make any modifications to make it work?

Code: Select all

lsusb
Bus 001 Device 005: ID 0572:1349 Conexant Systems (Rockwell), Inc.


Code: Select all

tail -n 200 /var/log/syslog
SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))
Errno 2] could not open port /dev/ttyACM0: [Errno 2] No such file or directory: '/dev/ttyACM0'
Is just not detecting the modem

Code: Select all

wvdialconf
Editing `/etc/wvdial.conf'.
Scanning your serial ports for a modem.
Sorry, no modem was detected!  Is it in use by another program?
Did you configure it properly with setserial?
Please read the FAQ at http://alumnit.ca/wiki/?WvDial

[totalexile]

No modifications but I think I did do an update using 'sudo apt-get update' and 'sudo apt-get upgrade'.

I've done you a shakey video so you can see it working: