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Mikrotik Syntax help, please

Vespus

Casual Member
I have just acquired a Mikrotik Chateau LTE6 today.

I have it up and running, but I want to be able to cell lock on a Three tower:
EARFCN 6175
PCI 176

I have been trying to use the syntax in Terminal as follows:

interface lte at-chat lte1 input ="AT*Cell= 2,3,,6175,176"

but I keep getting an error message. See attached screenshot.

The second (wrong?) attempt asks me for a number, but I don't know what to put.

What am I doing wrong, please?
 

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  • Screenshot 2023-09-21 at 16.24.39.webp
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This screenshot is actually what I want
Band 20 on Cell 6175, 176 as primary band
and Band 3 1392, 439 as CA band.

Without Cell lock, after a while, the router will jump to Band 3 as main band without CA.
 

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  • Screenshot 2023-09-21 at 16.47.35.webp
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Thanks for trying to help. Still no joy. See attached screenshot.
Print details show Band 3 as the Default. I think I somehow need to get Band 20 as the default to be sure of locking onto the Cell I want.
 

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  • Screenshot 2023-09-21 at 18.56.11.webp
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I've not used a Shatoo LTE6 but I've deployed lots of LHG LTE6s which presumably use the same modem and therefore the same AT commands?

Syntax: -
Code:
AT*Cell=<mode>,<NetworkMode>,<band>,<EARFCN>,<PCI>

where

<mode> :
0 – Cell/Frequency disabled
1 – Frequency lock enabled
2 – Cell lock enabled <--- you want this one

<NetworkMode>
0 – GSM
1 – UMTS_TD
2 – UMTS_WB
3 – LTE <-- you want this one, presumably

<band>
Not in use, leave this blank

<EARFCN>
earfcn from lte info

<PCI>
phy-cellid from lte info


First make sure any pre-existing cell locks are removed...

To remove cell lock: -

Code:
/interface lte at-chat lte1 input="AT*Cell=0"

Your examples look okay - here's one of mine that works fine (I tend to add these to scripts and then run the script rather than manually keying each time).

Code:
/interface lte at-chat lte1 input="AT*Cell=2,3,,1392,36"
 
Norfolk&Signal, thanks for the input. Unfortunately, it is not getting me anywhere. I have tried to clear any pre-existing cell locks exactly as you described but I get the error message +CME ERROR: Operation not supported. [|See attached screenshot].

Is it possible the Chatea LTE6 does not have the cell lock facility? It would be ridiculous if not, as it is the only reason I bought it.
 

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  • Screenshot 2023-09-21 at 21.27.21.webp
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Which modem does your device run? What's the modem firmware version (for example, mine here is R11e-LTE6_V035). Which version of RouterOS is installed? (6.x or 7.x) ?

In the web interface / winbox click on 'System -> Resources -> USB - if it is the same setup as the LHG LTE6 you'll see 2 entries, one of which is Mikrotik R11e-LTE6
 
Norfolk&Signal, thanks for the input. Unfortunately, it is not getting me anywhere. I have tried to clear any pre-existing cell locks exactly as you described but I get the error message +CME ERROR: Operation not supported. [|See attached screenshot].

Is it possible the Chatea LTE6 does not have the cell lock facility? It would be ridiculous if not, as it is the only reason I bought it.
There's a typo in your screenshot - Cell-0 should be Cell=0


= sign not hyphen
 
Sorry about that, but I still get the same error with the = sign. See attached
 

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In my earlier posts, above, where I refer to lte info command, that is now lte monitor in ROS 7.x as Mikrotik like changing random stuff unnecessarily
 
Have you disabled 'safe mode' in Winbox?

These commands most likely only work with safe mode switched OFF

I've just enabled safe mode and now get an error - albeit a different one to yours though ... hmm
 
Can you provide the output from an lte monitor command please?

For example, here's mine: -


Code:
[admin@NAS-DISH-T20] /interface/lte> monitor
numbers: lte1
           pin-status: ok
  registration-status: registered
        functionality: full
         manufacturer: "MikroTik"
                model: "R11e-LTE6"
             revision: R11e-LTE6_V035
     current-operator: O2 - UK
                  lac: 496
       current-cellid: 134164098
               enb-id: 524078
            sector-id: 130
           phy-cellid: 457
    access-technology: LTE
       session-uptime: 7m58s
                 imei: 356662102356281
                 imsi: 234106626126184
                 uicc: 8944110068745676200
         primary-band: B20@10Mhz earfcn: 6400 phy-cellid: 457
                   ri: 1
                 rssi: -72dBm
                 rsrp: -108dBm
                 rsrq: -16.5dB
                 sinr: -15dB
 
There is a modem init cell in the LTE1 inteface. I have tried inserting AT*Cell=2,3,,6175,176

As shown in the attached screenshot. Will this do any good? It does not seem to have been rejected but I don't know what effect if any it is having.

I'll get back to you in a minute re your idea of output from lte monitor command
 

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  • Screenshot 2023-09-21 at 22.01.21.webp
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As requested
Bingo.

FG621-EA <-- Different modem. Different AT commands required. You're going to need to find the cell locking AT commands for that modem (if it supports cell lock)

Fibocom might be able to help with this, or try our friend Google.
 
I confirm I have tried inputting and toggling Safe Mode: no difference.

FG621-EA: I can find no reference to this in the manual re cell lock- so I am beginning to fear cell lock is not supported, unless anyone else with a Chateau LTE6 can confirm differently. I am surprised: I bought a Mikrotik on the basis that cell locking was one of its big selling points.

i have written to Mikrotik support but am not holding my breath for a quick reply.

Thanks again for your attempts to help.
 
Given you've just spent a not inconsiderate amount of money on some brand new kit, you'll probably not want to do this - but assuming the modem module is not soldered to the PCB and is instead connected via a Mini PCIe connector, you could 'upgrade' it to a decent modem that DOES support cell locking - either the Mikrotik R11e-LTE6 that the LHG uses as standard, or a Quectel EP06-E (make sure it is the E suffix version).

I upgraded an old Cat 4 LHG unit to Cat 6 by swapping the modem out for an EP06-E and you can pick them up on AliExpress for about £40 - I bought a used on on eBay for £30 - but that was pretty jammy as I've not seen any others from UK sellers for similar money since.

You could try sending the device back - although I don't suppose they'll be obliged to refund you as it is fully working - well, unless you want to cell lock!
 
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