Почему на Xiaomi Router 3 [PADAVAN] отваливается USB модем?

С периодичностью в 10-15 минут отваливается usb модем на роутере Xiaomi Router 3.
В чем может быть причина?

Лог роутера
Aug 21 08:57:55 kernel: usb 1-1: USB disconnect, device number 5
Aug 21 08:57:55 pppd[1371]: Modem hangup
Aug 21 08:57:55 pppd[1371]: Connect time 16.6 minutes.
Aug 21 08:57:55 pppd[1371]: Sent 2142678 bytes, received 76973474 bytes.
Aug 21 08:57:55 kernel: option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
Aug 21 08:57:55 pppd[1371]: Connection terminated.
Aug 21 08:57:55 kernel: option 1-1:1.0: device disconnected
Aug 21 08:57:55 kernel: option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
Aug 21 08:57:55 kernel: option 1-1:1.3: device disconnected
Aug 21 08:57:55 MI-3: WAN down (ppp2)
Aug 21 08:57:55 kernel: option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
Aug 21 08:57:55 kernel: option 1-1:1.4: device disconnected
Aug 21 08:57:55 dnsmasq[551]: read /etc/hosts - 3 addresses
Aug 21 08:57:55 dnsmasq[551]: read /etc/storage/dnsmasq/hosts - 0 addresses
Aug 21 08:57:55 dnsmasq-dhcp[551]: read /etc/dnsmasq/dhcp/dhcp-hosts.rc
Aug 21 08:57:55 dnsmasq[551]: using nameserver 8.8.8.8#53
Aug 21 08:57:55 RAS Modem: Disconnected
Aug 21 08:57:59 kernel: usb 1-1: new high-speed USB device number 6 using ehci-platform
Aug 21 08:57:59 kernel: usb 1-1: New USB device found, idVendor=12d1, idProduct=1446
Aug 21 08:57:59 kernel: usb 1-1: Product: HUAWEI Mobile
Aug 21 08:57:59 kernel: usb 1-1: Manufacturer: HUAWEI Technology
Aug 21 08:57:59 kernel: scsi18 : usb-storage 1-1:1.0
Aug 21 08:57:59 kernel: scsi19 : usb-storage 1-1:1.1
Aug 21 08:58:00 pppd[1371]: Terminating on signal 15
Aug 21 08:58:00 pppd[1371]: Exit.
Aug 21 08:58:01 MI-3: Hardware NAT/Routing: Enabled, IPoE/PPPoE offload [WAN]<->[LAN/WLAN]
Aug 21 08:58:01 MI-3: Hardware NAT/Routing: IPv4 UDP flow offload - ON
Aug 21 08:58:01 MI-3: Hardware NAT/Routing: IPv6 routes offload - OFF
Aug 21 08:58:01 miniupnpd[1298]: shutting down MiniUPnPd
Aug 21 08:58:01 DHCP WAN Client: starting on eth2.2 ...
Aug 21 08:58:02 kernel: scsi 18:0:0:0: CD-ROM            HUAWEI   Mass Storage     2.31 PQ: 0 ANSI: 2
Aug 21 08:58:02 kernel: scsi 18:0:0:0: Attached scsi generic sg0 type 5
Aug 21 08:58:02 kernel: scsi 19:0:0:0: Direct-Access     HUAWEI   SD Storage       2.31 PQ: 0 ANSI: 2
Aug 21 08:58:02 kernel: sd 19:0:0:0: Attached scsi generic sg1 type 0
Aug 21 08:58:02 kernel: sd 19:0:0:0: [sda] Attached SCSI removable disk
Aug 21 08:58:02 usb_modeswitch: switch device 12d1:1446 on 001/006
Aug 21 08:58:02 kernel: usb 1-1: USB disconnect, device number 6
Aug 21 08:58:06 kernel: usb 1-1: new high-speed USB device number 7 using ehci-platform
Aug 21 08:58:06 kernel: usb 1-1: New USB device found, idVendor=12d1, idProduct=1436
Aug 21 08:58:06 kernel: usb 1-1: Product: HUAWEI Mobile
Aug 21 08:58:06 kernel: usb 1-1: Manufacturer: HUAWEI Technology
Aug 21 08:58:07 kernel: option 1-1:1.0: GSM modem (1-port) converter detected
Aug 21 08:58:07 kernel: usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
Aug 21 08:58:07 kernel: option 1-1:1.3: GSM modem (1-port) converter detected
Aug 21 08:58:07 kernel: usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
Aug 21 08:58:07 kernel: option 1-1:1.4: GSM modem (1-port) converter detected
Aug 21 08:58:07 kernel: usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2
Aug 21 08:58:07 kernel: scsi25 : usb-storage 1-1:1.5
Aug 21 08:58:07 kernel: scsi26 : usb-storage 1-1:1.6
Aug 21 08:58:10 kernel: scsi 25:0:0:0: CD-ROM            HUAWEI   Mass Storage     2.31 PQ: 0 ANSI: 2
Aug 21 08:58:10 kernel: scsi 25:0:0:0: Attached scsi generic sg0 type 5
Aug 21 08:58:10 kernel: scsi 26:0:0:0: Direct-Access     HUAWEI   SD Storage       2.31 PQ: 0 ANSI: 2
Aug 21 08:58:10 kernel: sd 26:0:0:0: Attached scsi generic sg1 type 0
Aug 21 08:58:10 kernel: sd 26:0:0:0: [sda] Attached SCSI removable disk
Aug 21 08:58:10 usb_modeswitch: no rule for device 12d1:1436
Aug 21 08:58:12 USB hotplug: try start USB Modem as WAN connection...
Aug 21 08:58:12 MI-3: Hardware NAT/Routing: Enabled, IPoE/PPPoE offload [WAN]<->[LAN/WLAN]
Aug 21 08:58:12 MI-3: Hardware NAT/Routing: IPv4 UDP flow offload - ON
Aug 21 08:58:12 MI-3: Hardware NAT/Routing: IPv6 routes offload - OFF
Aug 21 08:58:12 dnsmasq[551]: read /etc/hosts - 3 addresses
Aug 21 08:58:12 dnsmasq[551]: read /etc/storage/dnsmasq/hosts - 0 addresses
Aug 21 08:58:12 dnsmasq-dhcp[551]: read /etc/dnsmasq/dhcp/dhcp-hosts.rc
Aug 21 08:58:12 dnsmasq[551]: using nameserver 8.8.8.8#53
Aug 21 08:58:13 MI-3: select RAS modem interface ttyUSB0 to pppd
Aug 21 08:58:13 pppd[1804]: pppd 2.4.7 started by admin, uid 0
Aug 21 08:58:30 comgt: ERROR: CONNECT TIMEOUT!
Aug 21 08:58:30 pppd[1804]: Connect script failed
Aug 21 08:58:44 pppd[1804]: Serial connection established.
Aug 21 08:58:44 pppd[1804]: Using interface ppp2
Aug 21 08:58:44 pppd[1804]: Connect: ppp2 <--> /dev/ttyUSB0
Aug 21 08:58:47 pppd[1804]: Could not determine remote IP address: defaulting to 10.64.64.66
Aug 21 08:58:47 pppd[1804]: local  IP address 100.122.164.171
Aug 21 08:58:47 pppd[1804]: remote IP address 10.64.64.66
Aug 21 08:58:47 pppd[1804]: primary   DNS address 10.250.169.1
Aug 21 08:58:47 pppd[1804]: secondary DNS address 10.250.169.2
Aug 21 08:58:47 pppd[1804]: primary   WINS address 10.11.12.13
Aug 21 08:58:47 pppd[1804]: secondary WINS address 10.11.12.14
Aug 21 08:58:47 MI-3: WAN up (ppp2)
Aug 21 08:58:47 dnsmasq[551]: read /etc/hosts - 3 addresses
Aug 21 08:58:47 dnsmasq[551]: read /etc/storage/dnsmasq/hosts - 0 addresses
Aug 21 08:58:47 dnsmasq-dhcp[551]: read /etc/dnsmasq/dhcp/dhcp-hosts.rc
Aug 21 08:58:47 dnsmasq[551]: using nameserver 10.250.169.1#53
Aug 21 08:58:47 dnsmasq[551]: using nameserver 10.250.169.2#53
Aug 21 08:58:47 RAS Modem: Connected
Aug 21 08:58:47 miniupnpd[1909]: version 2.0 starting UPnP-IGD ext if ppp2 BOOTID=1566377927
Aug 21 08:58:47 miniupnpd[1909]: HTTP listening on port 14172
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