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I have a problem connecting to Telstra 4G on the 700MHz band.  The symptoms are the same as if I needed to upgrade the Huawei ME906s modem firmware subsequent to the change made by Telstra in 2017. But my RUT950 does not have a Huawei modem, it has a Quectel modem.

The symptoms are:

  • with Service mode="Automatic" in Network/Mobile:
    • it connects with Telstra 4G when it is available on the 850MHz band
    • it does not connect with Telstra 4G when it is only available on the 700MHz band, but connects to 3G on 850MHz instead
  • with Service mode="4G (LTE) only":
    • it does not connect  when 4G is only available on the 700MHz band

The references regarding the Huawei modem firmware upgrade for Telstra 4G over 700MHz are:

From Status/Device, my RUT950 device details are:

  • Serial number 1101410923
  • Product code RUT950MG1XXX
  • Batch number 0065
  • Hardware revision 1307

and modem details are:

  • Model EC25
  • FW version EC25AUFAR02A04M4G

From System/Firmware, I have:

  • Firmware version RUT9XX_R_00.06.00.2
  • Firmware build date 2019-03-07, 13:49:36
  • Kernel version 3.18.44
  • Bootloader version 3.0.1

From Network/Mobile/General, my "Mobile Configuration" settings are:

  • Connection type="QMI" (rather than "PPP"; note that "NDIS" is not offered)
  • Mode="NAT" (no alternatives)
  • APN="telstra.internet"
  • PIN number=empty
  • Dialing number="*99#"
  • MTU="1500"
  • Authentication method="None" (rather than "PAP" or "CHAP")
  • Service mode="Automatic" (or "4G (LTE) only" as per above)
  • Deny data roaming=unticked
  • Use IPv4 only=ticked

and "Force LTE Network" settings are:

  • Enable=unticked
  • Reregister=unticked
  • Interval (sec)="300"

Can anybody suggest what I need to do to successfully use Telstra 4G(X) over 700MHz with this device?

Thanks!

1 Answer

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Hello,

Can you try selecing manual band for router to connect to Telstra 4G on 700Mhz? This can be done with the latest firmware and by navigating to Network -> Mobile -> Network Frequency Bands select manual and the band to which you want router to connect.

After selecting, see if router will be able to connect to 4G network.
Best answer
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Yes! With the Band set to "B28" and the Connection type set to "4G (LTE) only", I get a connection. Screenshot of Status/Network below.  

So, it seems that the device can connect to 4G on 700MHz but does not do so automatically.  Is there some more I can do to help diagnose that?

By the way:

  • I am relying on oztowers.com.au to say that the only Telstra 4G in this area is on 700MHz. Screenshot below.
  • My iPhone has 3/4 bars of 4G/LTE but I don't know how/whether I can confirm the band(s) it is using.
  • The RUT950 is using the out of the box antennas i.e. no external mobile antenna.

Thanks!

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Hello,

Could you let us know if you got the same issue with the latest FW version uploaded in the wiki page ?

https://wiki.teltonika.lt/view/RUT9xx_Firmware
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Unfortunately, as I am travelling I am no longer in the area that only had 700MHz. My current location has 700MHz and 1800MHz on several towers in this region (screenshot from OzTowers below).

I have installed RUT9XX_R_00.06.00.3.  With Service mode=Automatic and Connection method=Automatic in Network/Mobile/General, Status/Network shows Connection type=4G(LTE) and Connection band=LTE BAND 3 (screenshot from Status/Network  below).

I will look out for a 700MHz-only region but do not know where or when that will be.

Please let me know if any further tests would assist. 


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No problem, your information is already helpful.