Sending AT command to Fibocom FM350-GL

Forums › Microsoft Windows › Sending AT command to Fibocom FM350-GL - Windows 11 Pro & PuTTY

StevieT

702 posts

Ultimate Geek

#311187 21-Dec-2023 17:20

Mentioned in this thread but will re-post for more visibility.

Have PuTTY installed on Windows 11 Pro laptop.

See Intel Active Management Technology - SOL (COM3) listed under Ports (COM & LPT) in device manager.

The Fibocom FM350-GL module is showing (I believe) under Network adapters as "Intel 5G Solution 5000 #14", with its location stated as "PCI Slot 5 (PCI bus 91, device 0, function 0)".

Under COM3, the ports settings are listed as:

Bits per/s: 9600

Data bits: 8

Parity: None

Stop bits: 1

Flow control: None

Should I connect to COM3 via PuTTY, setting the above (speed as 9600 too), to send an AT command (AT+COPS=0) to the Fibocom module?

1 | 2 | 3

11391 posts

Uber Geek

Trusted

Lifetime subscriber

#3174247 22-Dec-2023 07:47

9600 baud rate is not packet switched data very old CSD circuit switch data

StevieT

702 posts

Ultimate Geek

#3174260 22-Dec-2023 08:27

Linux:

9600 baud rate is not packet switched data very old CSD circuit switch data

I have no clue what you're talking about.

freitasm

BDFL - Memuneh
79250 posts

Uber Geek

Administrator

ID Verified

Trusted

Geekzone

Lifetime subscriber

#3174439 22-Dec-2023 10:02

Circuit switch data is the old-style modem communications over the serial port. It's limited in speed and generally you will see speeds from 300 bps up to 56 kbps. It's a direct connection between modems.

This is what you usually found in dial-up over phone lines or using a serial comms port over mobile connections.

Before GPRS (2G) was introduced, mobile phones would have to "connect" using an AT command, like a landline modem would.

With GPRS this connection was moved from a circuit-switched connection to a packet-switched connection. The terminals (phones, modems) were always on-line, like today's broadband connections, and used data packets instead of a stream of bits to communicate with services.

I think @linux meant that you can send all AT commands you want to the module, but I'm not sure if this will result in an old-style packet switch connection happening these days.

By the way, the command to initiate a circuit switch connection is ATDT*99# - look at this old thread for an example: Bluetooth Palm Zire 72 ---> Motorola Razr (geekzone.co.nz)

StevieT

702 posts

Ultimate Geek

#3174642 22-Dec-2023 16:58

Ah okay, appreciate that further explanation. Thanks @linux and @freitasm

I've never done this sort of sending of commands before, so am quite literally stuck at even initiating with ATDT*99#. Is that via PuTTY? If so, my original questions stand (what's the COM port of the module etc). What speed would be appropriate? The COM3 port settings currently have 9600 as bits per second, so maybe that doesn't correspond to the FM350-GL module.

All of this is new territory for me.

freitasm

BDFL - Memuneh
79250 posts

Uber Geek

Administrator

ID Verified

Trusted

Geekzone

Lifetime subscriber

#3174650 22-Dec-2023 17:04

The communication via COM port isn't something you can use anymore - or at least I don't think there's any CSD service available now. It would be like the old dial-up ISPs.

SirHumphreyAppleby

2844 posts

Uber Geek

#3174666 22-Dec-2023 18:25

I think Steve is trying to send AT commands to the 5G module to configure it or force it to do something. AT commands are still widely used for this purpose. E.g. I used AT commands to force my GSM gateway to use 2G/3G on 900MHz as it kept trying to connect on 1800MHz.

I believe 9600 is the 'default' for a serial port, so you may need to configure it for whatever the default of the device is. E.g. 115200 is a common speed for modern hardware.

Linux

11391 posts

Uber Geek

Trusted

Lifetime subscriber

#3174668 22-Dec-2023 18:32

The modem must be visible in device manager

Equinox IT

Cloud spending continues to surge globally, but most organisations haven’t made the changes necessary to maximise the value and cost-efficiency benefits of their cloud investments. Download the whitepaper From Overspend to Advantage now.

StevieT

702 posts

Ultimate Geek

#3174674 22-Dec-2023 19:36

The module does indeed show up in device manager (see OP).

I have no clue how to send AT commands to it. it is clearly not a command prompt job, which is why I installed PuTTY as suggested in the linked thread (see OP).

StevieT

702 posts

Ultimate Geek

#3174675 22-Dec-2023 19:37

SirHumphreyAppleby:

I think Steve is trying to send AT commands to the 5G module to configure it or force it to do something.

Yes, that's what I'm hoping to do.

Linux

11391 posts

Uber Geek

Trusted

Lifetime subscriber

#3174686 22-Dec-2023 20:36

I don't get why you need to do this. I work on laptops all the te with 3G/4G/5G modems in them and they just work

RunningMan

8953 posts

Uber Geek

#3174688 22-Dec-2023 20:50

I think the COPS=0 command sets network selection to automatic, so presumanbly the OP's modem is looking for a specific carrier or something similar.

Is there not a Fibocom app or something similar to do this sort of config though?

StevieT

702 posts

Ultimate Geek

#3174689 22-Dec-2023 20:52

Linux: I don't get why you need to do this. I work on laptops all the te with 3G/4G/5G modems in them and they just work

If you aren't going to provide helpful instructions on achieving what I wish to do, then please don't comment. It is a waste of time.

Sometimes things just don't "just work".

StevieT

702 posts

Ultimate Geek

#3174690 22-Dec-2023 20:53

RunningMan:

I think the COPS=0 command sets network selection to automatic, so presumanbly the OP's modem is looking for a specific carrier or something similar.

Is there not a Fibocom app or something similar to do this sort of config though?

Not that I'm aware. I've been told by Fibocom I can try the AT command. How that is done is another story.

Mehrts

1063 posts

Uber Geek

Trusted

#3174692 22-Dec-2023 21:06

Linux: I don't get why you need to do this. I work on laptops all the te with 3G/4G/5G modems in them and they just work

Just because you've never had issues with something, doesn't mean that someone else has..

Linux

11391 posts

Uber Geek

Trusted

Lifetime subscriber

#3174693 22-Dec-2023 21:06

StevieT:
Linux: I don't get why you need to do this. I work on laptops all the te with 3G/4G/5G modems in them and they just work

If you aren't going to provide helpful instructions on achieving what I wish to do, then please don't comment. It is a waste of time.

Sometimes things just don't "just work".

@StevieT you are out of your depth take the laptop to someone that knows what they are doing!

We are guessing what the issue could be and you could be totally barking up the wrong tree in getting the issue sorted

1 | 2 | 3