# Connecting to private LTE network/AT commands/nas-network-scan **URL:** \ **Category:** MC/EM Series\ **Created:** [June 18, 2024, 9:56pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574 "2024-06-18T21:56:40Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![groupo](https://avatars.discourse-cdn.com/v4/letter/g/b5e925/32.png) [@groupo](https://forum.sierrawireless.com/u/groupo)\ **Post date:** [June 18, 2024, 9:56pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/1 "2024-06-18T21:56:40Z")
Trying to connect to a private LTE network. I have a drone made by another company that came with the EM9291 modem - I am coming over from their forms as it feels a little more modem-centric. I am having some issues connecting to my private network. I have successfully connected to other networks, and can confirm the modem is working. most notably, I cannot even _see_ the network with `qmicli device=/dev/cdc-wdm0 --nas-network-scan` I know the network exists, as I have a cell phone with me that is connected to it. I have read through some posts here and their forms which have led me to AT commands. The two questions I have are: 1. How do I issue AT commands? This drone company does not seem to have any examples of AT commands issued for this modem. 2. What is the behavior of --nas-scan-networks? I tried to look for some documentation but could not find it. Does it only look for a certain subset of MCC/MNCs? Our network uses 001/01 ---
**Author:** ![groupo](https://avatars.discourse-cdn.com/v4/letter/g/b5e925/32.png) [@groupo](https://forum.sierrawireless.com/u/groupo)\ **Post date:** [June 18, 2024, 10:16pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/2 "2024-06-18T22:16:12Z")
I saw [here](https://forum.sierrawireless.com/t/using-private-lte-with-em9191/30742/3) that test networks generally don’t show up. Seems like AT commands are the way to rectify this? ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [June 19, 2024, 1:13am UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/3 "2024-06-19T01:13:40Z")
how about using AT+COPS=? ---
**Author:** ![groupo](https://avatars.discourse-cdn.com/v4/letter/g/b5e925/32.png) [@groupo](https://forum.sierrawireless.com/u/groupo)\ **Post date:** [June 19, 2024, 12:05pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/4 "2024-06-19T12:05:36Z")
Great suggestion, thank you. How do I issue AT commands? That was one of the questions in my post that I am still unsure of. Once I figure out how to issue these commands, I will try that. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [June 19, 2024, 1:12pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/5 "2024-06-19T13:12:01Z")
Did you install MBPL USB driver? /dev/ttyUSB0 should be enumerated for AT command [https://source.sierrawireless.com/resources/airprime/software/mbpl/mbpl-software-latest/](https://source.sierrawireless.com/resources/airprime/software/mbpl/mbpl-software-latest/) ---
**Author:** ![groupo](https://avatars.discourse-cdn.com/v4/letter/g/b5e925/32.png) [@groupo](https://forum.sierrawireless.com/u/groupo)\ **Post date:** [June 20, 2024, 2:03pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/6 "2024-06-20T14:03:50Z")
I do not see ttyUSB0 enumerated. This modem came as part of a drone from a third party. Their scripts are open source, and I see them enumerate ttyUSB0 for other modems, but it is not for the EM9291. I have a ticket out with them to inquire how the send the AT commands. `ls /dev` lists a bunch of tty#, but no TTYUSB# ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [June 20, 2024, 2:45pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/7 "2024-06-20T14:45:26Z")
Can you check dmesg? ---
**Author:** ![groupo](https://avatars.discourse-cdn.com/v4/letter/g/b5e925/32.png) [@groupo](https://forum.sierrawireless.com/u/groupo)\ **Post date:** [June 20, 2024, 3:23pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/8 "2024-06-20T15:23:38Z")
[dmseg\_output.txt](https://forum.sierrawireless.com/uploads/short-url/21iWnODR8z9txg8gr91vxvQZiZm.txt) (162.1 KB) ---
**Author:** ![groupo](https://avatars.discourse-cdn.com/v4/letter/g/b5e925/32.png) [@groupo](https://forum.sierrawireless.com/u/groupo)\ **Post date:** [June 20, 2024, 3:25pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/9 "2024-06-20T15:25:17Z")
What should I be looking for? Attached the full output for convenience ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [June 20, 2024, 3:33pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/10 "2024-06-20T15:33:29Z")
Can you install MBPL USB driver? [https://source.sierrawireless.com/resources/airprime/software/mbpl/mbpl-software-latest](https://source.sierrawireless.com/resources/airprime/software/mbpl/mbpl-software-latest) i don’t see your qcserial driver is enumerating anything ---
**Author:** ![groupo](https://avatars.discourse-cdn.com/v4/letter/g/b5e925/32.png) [@groupo](https://forum.sierrawireless.com/u/groupo)\ **Post date:** [June 20, 2024, 4:12pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/11 "2024-06-20T16:12:04Z")
I will try to install that. Again this is a 3rd party drone, and I am fairly new to this project, so forgive some of my dense questioning… of all the links on that page, which one will I want and is there anywhere in particular I should install it? just on the drone or somewhere else relating to the EM9291? ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [June 20, 2024, 4:24pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/12 "2024-06-20T16:24:41Z")
you can install MBPL\_DRIVERS\_R35\_ENG4-usb-src.tar ---
**Author:** ![groupo](https://avatars.discourse-cdn.com/v4/letter/g/b5e925/32.png) [@groupo](https://forum.sierrawireless.com/u/groupo)\ **Post date:** [June 20, 2024, 4:36pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/13 "2024-06-20T16:36:26Z")
Okay, I unzipped the tar on the drone, but I get some make errors when trying to install. I know how to fix many of them but I am a little hesitant to install this in the event it messes something else up the devs of this drone have set up. Let me try to hear back from their devs first before I move forward ---
**Author:** ![groupo](https://avatars.discourse-cdn.com/v4/letter/g/b5e925/32.png) [@groupo](https://forum.sierrawireless.com/u/groupo)\ **Post date:** [June 20, 2024, 6:40pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/14 "2024-06-20T18:40:14Z")
@jyijyi Tried to go thru with everything… This is the output I receive `make -C /lib/modules/4.19.125/build M=/usb make[1]: Entering directory '/lib/modules/4.19.125/build' make[1]: ***No targets specified and no makerfile found. Stop. make[1]: Leaving directory '/lib/modules/4.19.125/build' Makefile:12: recipe for target 'all' failed make*** [all] Error 2` if it provides any clarity, I had to `mkdir /lib/modules/####/build` it did not exist before ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [June 21, 2024, 12:38am UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/15 "2024-06-21T00:38:10Z")
You better ask the drone how to install ---
**Author:** ![groupo](https://avatars.discourse-cdn.com/v4/letter/g/b5e925/32.png) [@groupo](https://forum.sierrawireless.com/u/groupo)\ **Post date:** [July 1, 2024, 2:35pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/16 "2024-07-01T14:35:53Z")
I am still working on getting these drivers installed, but I can see that the qcserial they are using does not have the SW EM9291 defined. its most recent definition is the the 7565. Once I get the driver working, I will be able to send AT commands to that port. I have seen a few other posts on here that I will have to dig up. You recommended using AT+COPS=? . What would the next steps be assuming my network appears? What would they be if my network does not appear? Note I _know_ that the network is up because I have other phones connected to it ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [July 1, 2024, 2:41pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/17 "2024-07-01T14:41:21Z")
the goal is to see if AT+COPS=? returns the network scan result ---
**Author:** ![groupo](https://avatars.discourse-cdn.com/v4/letter/g/b5e925/32.png) [@groupo](https://forum.sierrawireless.com/u/groupo)\ **Post date:** [July 8, 2024, 3:24pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/18 "2024-07-08T15:24:35Z")
is there a path forward if it does not return my network? ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [July 8, 2024, 3:32pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/19 "2024-07-08T15:32:00Z")
does it work with public SIM card? If yes, probably it really cannot see any operator when using the private SIM ---
**Author:** ![groupo](https://avatars.discourse-cdn.com/v4/letter/g/b5e925/32.png) [@groupo](https://forum.sierrawireless.com/u/groupo)\ **Post date:** [July 8, 2024, 4:29pm UTC](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574/20 "2024-07-08T16:29:25Z")
Yes the drone works with a public SIM card. (I assume you mean something like a verizon SIM). Additionally, I have the SIMs needed for my private network in regular phones and they connect to my private network so I can confirm it is up [Next page](https://forum.sierrawireless.com/t/connecting-to-private-lte-network-at-commands-nas-network-scan/32574.md?page=2)