Добрый день.
Что может значить информация в SMDR:

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1@$oЅsR 9!_ЊI ПҐ H}яУ5я[SDC_Init_Port] ttyS0, fd=157, br=19200, hflow=0, xon/off=0
[SDC_Init_Port] ttyUSB0, fd=-1, br=115200, hflow=0, xon/off=0
[SDC_Init_Port] ttyUSB1, fd=-1, br=115200, hflow=0, xon/off=0

iPECS-300 Key Telephone System.
Copyright © 2003
Ericsson-LG Enterprise.
Port Name:COM1Date: 12/16/22 Time: 13:05:27
Version: MFIM/GS96M-F.1Dy SEP/17, Checksum: 0

SW1 BACKUP DATABASE: THE SYSTEM DATABASE WAS NOT RESTORED TO DEFAULT!
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:699 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:705 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:711 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:717 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:723 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:729 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:735 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:741 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:746 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:752 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:757 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:800 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:805 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:816 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:828 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:837 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:867 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:874 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:893 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:909 Status:0
[DEBUG] File:main_sub.c,Func:Create_AppTasks(),Line:921 Status:0
[DEBUG] DhcpClientThread Start!!!
[DEBUG] DhcpClientThread Stop(0)!!!
[XMLHttpWebserverStart] : >>>>>>>>>>>>>>>>
Q[2]-[5800b] Qsize[16384]->msg_qB[61440]

*** Start LLDP-MED ***
lldp Comp : 2017/09/27 18:20:08 by babmuse
lldp Date : 2017/09/27 18:20:08

lldp year : 2017, month : 09, day : 27
RdPsysDiffServPreTaggingMfim : 4
RdPsysVlanOnOff : 0
RdPsysVlanPriority : 0
RdPsysVlanId : 0

на SMDR не похоже, больше похоже на мусор. Отключите все трассировки

А это не может быть похоже на взлом?

нет