Hi, When I use my modem a bit, its dls links go down, and the modem hangup.

it takes a while to reconnect.

here is log :
2024-04-09 08:36:14 [5] System: DSL Link Down
2024-04-09 08:36:16 [6] PPP: Terminating on signal 15
2024-04-09 08:36:16 [6] PPP: Connect time 1183.4 minutes.
2024-04-09 08:36:16 [6] PPP: Sent 94898393 bytes, received 87646720 bytes.
2024-04-09 08:36:20 [6] PPP: Terminating on signal 15
2024-04-09 08:36:23 [5] PPP: Connection terminated.
2024-04-09 08:36:23 [5] PPP: Release PPP unit success
2024-04-09 08:36:23 [5] PPP: Modem hangup
2024-04-09 08:37:14 [5] System: DSL Training
2024-04-09 08:37:18 [5] System: DSL Link Down
2024-04-09 08:37:23 [5] System: DSL Training
2024-04-09 08:38:14 [5] System: DSL Link Down
2024-04-09 08:38:18 [5] System: DSL Training
2024-04-09 08:38:24 [5] System: DSL Link Down
2024-04-09 08:38:27 [5] System: DSL Training
2024-04-09 08:39:47 [5] System: DSL Link Up us/ds 31792/71677 kbps Type 64/65B PTM Annex A
2024-04-09 08:39:49 [6] PPP: sent [PADT session is 1830]
2024-04-09 08:39:49 [6] PPP: sent [PADI Host-Uniq(0x00006694)]
2024-04-09 08:39:49 [6] PPP: rcvd  [PADO PeerMac(38-bc-01-b4-50-8f)]
2024-04-09 08:39:49 [6] PPP: sent [PADR Host-Uniq(0x00006694)]
2024-04-09 08:39:49 [6] PPP: rcvd  [PADS SessionID(0x08db)]
2024-04-09 08:39:49 [5] PPP: Connected to 38:bc:01:b4:50:8f via interface nas8.0
2024-04-09 08:39:49 [6] PPP: Using interface ppp1
2024-04-09 08:39:49 [5] PPP: Connect: ppp1 <--> nas8.0
2024-04-09 08:39:52 [6] PPP: Remote message: Authentication success,Welcome!
2024-04-09 08:39:52 [5] PPP: PAP authentication succeeded
2024-04-09 08:39:52 [5] PPP: peer from calling number 38:BC:01:B4:50:8F authorized
2024-04-09 08:39:52 [5] PPP: local  IP address 5.232.124.176
2024-04-09 08:39:52 [5] PPP: remote IP address 5.232.96.1
2024-04-09 08:39:52 [5] PPP: primary   DNS address 5.200.200.200
2024-04-09 08:39:52 [5] PPP: secondary DNS address 217.218.127.127
2024-04-09 08:56:44 [5] DHCPD: Send ACK to 192.168.1.100

and the picture of the status when it's connected :