Question

I have a RUT955 with FW RUT9XX_R_00.06.05.1 and the last weeks the router continuously disconnect from mobile network. Sometime the router works for some days without any problems, sometimes the router disconnect the mobile network after some hours.

After a reboot the router works for some time and then the same problem occurs. The only messages in den Logfiles:

2020-01-10 11:42:20 - Mobile Data - Mobile data connected: T-Mobile A
2020-01-10 11:42:06 - Mobile Data - Mobile data disconnected

At the overview the data connection state is "Disconnected" and the State is "Registered (home); T-Mobile A; 4G (LTE). Signal strength is -83dBm

When I put the simcard in a Huawei Router, all works fine (with the same antennas)

Can anyone help me?

Thanks a lot!

Answer 1

Hi,

More parameters are used to determine the overall quality of the connection. They can be checked in the Status → Network → Mobile page. (Reference to that is here.)

Also, a Troubleshoot file could provide useful insights into the issue. Could you send it to me via private message? It can be downloaded from the routers WebUI, System → Administration → Troubleshoot page.

And what is model name of the Huawei router in question?

Comments

I have to wait until the next failure. Then I can transfer the data.

---

In the syslog you can see the connection lost at Fri Jan 10 17:05:33:

Fri Jan 10 17:03:40 2020 kern.warn kernel: [ 7777.350000] [<8006e294>] r4k_wait_irqoff+0x18/0x20
Fri Jan 10 17:03:40 2020 kern.warn kernel: [ 7777.350000] [<8009fb10>] cpu_startup_entry+0xf0/0x13c
Fri Jan 10 17:03:40 2020 kern.warn kernel: [ 7777.360000] [<803a0b5c>] start_kernel+0x42c/0x444
Fri Jan 10 17:03:40 2020 kern.warn kernel: [ 7777.360000]
Fri Jan 10 17:03:40 2020 kern.warn kernel: [ 7777.360000] ---[ end trace f9c4e67c49966ba3 ]---
Fri Jan 10 17:05:03 2020 daemon.notice netifd: ppp (3446): [01-10_17:04:03:105] QmiThreadSendQMITimeout pthread_cond_timeout_np=145, errno: 2 (No such file or directory)
Fri Jan 10 17:05:03 2020 daemon.notice netifd: ppp (3446): [01-10_17:04:03:105] requestQueryDataCall err = 145
Fri Jan 10 17:05:03 2020 daemon.notice netifd: ppp (3446): [01-10_17:04:33:106] QmiThreadSendQMITimeout pthread_cond_timeout_np=145, errno: 2 (No such file or directory)
Fri Jan 10 17:05:03 2020 daemon.notice netifd: ppp (3446): [01-10_17:04:33:106] requestGetIPAddress err = 145
Fri Jan 10 17:05:03 2020 daemon.notice netifd: ppp (3446): [01-10_17:05:03:106] QmiThreadSendQMITimeout pthread_cond_timeout_np=145, errno: 2 (No such file or directory)
Fri Jan 10 17:05:03 2020 daemon.notice netifd: ppp (3446): [01-10_17:05:03:106] requestDeactivateDefaultPDP err = 145
Fri Jan 10 17:05:33 2020 daemon.notice netifd: Interface 'ppp' has lost the connection
Fri Jan 10 17:05:33 2020 daemon.warn dnsmasq[4201]: no servers found in /tmp/resolv.conf.auto, will retry
Fri Jan 10 17:05:33 2020 daemon.notice netifd: ppp_4 (3571): udhcpc: received SIGTERM
Fri Jan 10 17:05:33 2020 daemon.notice netifd: Interface 'ppp_4' is now down
Fri Jan 10 17:05:33 2020 daemon.notice netifd: Network alias '' link is down
Fri Jan 10 17:05:33 2020 daemon.notice netifd: Interface 'ppp_4' has link connectivity loss
Fri Jan 10 17:05:33 2020 daemon.notice netifd: Interface 'ppp_4' is disabled
Fri Jan 10 17:05:33 2020 local1.info hotplug-gsmstate[2195]: envACT: ifdown

And here a screenshot of the mobile information page:

---

Have you any ideas?

---

Sorry, it is not a huawei router. It is a alcatel HH40V