Zigbee3 gateway fails to connect to ZTE T3000 router - SmartLife configuration

Good morning,

this is my first post here and my first adventures with gateway configuration- previously I have successfully paired and managed devices via Wi-Fi such as sockets, strips or cameras - so absolute basic level.

Setup:
-Router external ODU - ZTE MC889 5G (LTE)
-Router internal Wi-Fi IDU - ZTE T3000
-Bridge Silvercrest Rj45 (Zigbee3)
-.MOES Wi-Fi gateway (already handed over)
-Application SmartLife
-Outdoor roller shutter controllers (Zigbee3)
-Sockets (Wi-Fi)
-Bulbs (Wi-Fi)

For a few weeks I have been living in the countryside. The only way to Internet is 4G/5G, the provider is PLUS GSM providing the best bandwidth of 50-60 Mbit/s in both directions, it may be worth noting, PINGs are considerable, over 50ms and sometimes at the level of 70-100ms

With SmartLife I control sockets and light bulbs without any problem.

I bought the Zigbee3 gateway and roller shutter controllers (Zigbee3).

First I connected the gateway via Wi-Fi - the connection procedure both automatic and manual went without a problem, but when trying to test the network connection, a message appeared: Weak network connection, the current network is malfunctioning and you cannot connect to it. I tried putting the gateway in various places including next to the router - no results.

I sent the gateway back and bought a gateway "on cable". Better, but similar. Configuration both automatic and manual works fine. When trying to test the network connection it alternately appeared "Good network conditions" - shows (Virtual ID, IP address, MAC address) or the already known message "Poor network connection, current network is malfunctioning and you cannot connect to it. "
What I have already done:
-verified router and gateway software updates
-checked security and router locks from basic and advanced settings-no apparent
-allocated common settings for network 2.4G and 5G
-other network names
-other network passwords
-Router ODU is in bridge mode and on IPv4
-Bluetooth active/location for applications enabled
Roller controllers have not yet paired because I wonder if I should not send all this to hell and not to get the controllers drunk over Wi-Fi (which for obvious reasons I do not want) , but first I would prefer to try to solve the problem with the Zigbee3 gateway and the network.

What else should I check/change?

Do other devices when you perform a "Check network" have similar results?
Are there problems with the roller shutter control?

Because you have few Zigbee devices, you may have a problem with the range between the roller shutter control and the Zigbee gateway.

I have not yet paired the roller shutter controllers. There are no other Zigbee3 devices on the network. The existing devices connect to the 2.4 network without any problems and have never reported any issues.

lukasztjanas wrote:

Existing devices connect to the 2.4 network without problems and have never reported issues.

Have you performed a "Check network" on devices other than the Zigbee gateway in the Tuya Smart app? Maybe the same problems are occurring for other devices, but realistically not affected?

Now I understood what you meant
I yes: 2 sockets at the check network command are Ok. 2 signal the same problem as the gateway (one is outside the building- far from the router and the other less than a metre away).
Which means. It's not just the gateway...

There is a user matek451 on the forum and he helps e.g. with the ODU setup, should any adjustment be required. A top of the range device itself.
You can also run the MTR tool, e.g. WinMTR and see if any packet losses occur.

Do the shutter controllers have a permanent power supply, or battery or rechargeable? As I wrote earlier, you must additionally pay attention to the ZigBee signal range. In this case, a small number of devices is a disadvantage, because ZigBee devices that have a permanent power supply serve as signal relays in a given network.

The roller shutter controllers will have constant voltage from the mains.
I will do tests with the tools mentioned.

Probably there is a lot of room for improvement for the ODU itself, for the moment just put out behind the window on the side of the house where there was the best bandwidth and aggregation. I haven't yet done a detailed setup behind the window or bandwidth analysis.

I managed to get a connection:

- I disconnected all devices from the router (both WiFi and wired)
- I connected the gateway via cable to the router
- reconfiguration of the gateway
--->success
- I connected successively all previously disconnected devices and checked the network- OK
- I mounted the roller shutter controllers
- 3 out of 4 are working
4 controller is too far from the gateway and is not able to connect to its network

I am therefore thinking about adding some further Zigbee3 module e.g.

I am therefore thinking of adding a further Zigbee3 module e.g. in a pluggable switch to extend the network range.