Начала виснуть MG300 Опции

[Ulymka]

Добрый день! после почти года нормальной работы начала зависать АТС (на всех телефонах тишина по сети пинга нет) . Помогает рестарт с кнопки по сети атс не доступна. По логам иногда атс ребутается сама. Виснет в день раз по 5
iPECS-MG300 Version : iPECS-MG/GS56MxB.0De SEP/12
3 кабинета
Привожу куски логов
[13/10/15 01:46:12] ===== START iPECS-MG_SYSTEM =====
[13/10/15 01:46:12] Version : iPECS-MG 56MxB.0De
[13/10/15 01:46:12] Release Date : SEP/12
[13/10/15 01:46:12] Working Dir : /
[13/10/15 01:46:12] Process ID : (PID 77)
[13/10/15 01:46:12] New DB Type Indexing for System Init !!
[13/10/15 01:46:12] First Main Act2 Init-Complete Ver(1.1)
[13/10/15 01:46:12] Second Main Act2 Init-Complete ver(1.1)
[13/10/15 01:46:12] [NET_INIT] Ethernet IP : 10.10.5.121
[13/10/15 01:46:12] Dsp Version : 1.1(10/03/16)
[13/10/15 01:46:12] Boot Version : 1.1Ab AUG/11
[13/10/15 01:46:12] OS Version : 1.1Ab AUG/11
[13/10/15 01:46:12] Comp - 2012/09/03 09:58:15
[13/10/15 01:46:44] [sipstack_task] Success sip stack initialization...
[13/10/15 01:46:44] AAFU - Ram-Disk Access

[13/10/15 01:46:45] [OAM ][REGIST ] RESTART CMD was sent to device 013A!!!
[13/10/15 07:02:27]

[13/10/15 07:02:27] ===== START iPECS-MG_SYSTEM =====
[13/10/15 07:02:27] Version : iPECS-MG 56MxB.0De
[13/10/15 07:02:27] Release Date : SEP/12
[13/10/15 07:02:27] Working Dir : /
[13/10/15 07:02:27] Process ID : (PID 77)
[13/10/15 07:02:27] New DB Type Indexing for System Init !!
[13/10/15 07:02:27] First Main Act2 Init-Complete Ver(1.1)
[13/10/15 07:02:27] Second Main Act2 Init-Complete ver(1.1)
[13/10/15 07:02:27] [NET_INIT] Ethernet IP : 10.10.5.121
[13/10/15 07:02:27] Dsp Version : 1.1(10/03/16)
[13/10/15 07:02:27] Boot Version : 1.1Ab AUG/11
[13/10/15 07:02:27] OS Version : 1.1Ab AUG/11
[13/10/15 07:02:27] Comp - 2012/09/03 09:58:15
[13/10/15 07:02:54] [sipstack_task] Success sip stack initialization...
[13/10/15 07:02:56] AAFU - Ram-Disk Access

[13/10/15 07:02:58] [OAM ][REGIST ] RESTART CMD was sent to device 013A!!!
[13/10/15 07:15:53]


index(3)
************************************************************
=== Fault Time : 13/10/15 07:15:06 ===
_main_app1.rom: unhandled page fault at 0x00000000, code 0x000
PC is at 00000000
LR is at 402cd8d8
pc : [<00000000>] lr : [<402cd8d8>] Not tainted
sp : bb1fd940 ip : 00000000 fp : 0383b6fc
r10: 40314628 r9 : bb1fd988 r8 : 0383b5e8
r7 : 00000000 r6 : 038392d0 r5 : 00000000 r4 : 00000000
r3 : 000028a0 r2 : 40316ec8 r1 : bb1fd988 r0 : 00000000
Flags: nZCv IRQs on FIQs on Mode USER_32 Segment user
Control: C000717F Table: 06548000 DAC: 00000015
Task pid: 123 Thread_name: sipstack_task
Application version:
Back-trace Start:
Back-trace End:

index(4)
************************************************************
=== Fault Time : 13/10/15 07:15:06 ===
_main_app1.rom: unhandled page fault at 0x00000000, code 0x000
PC is at 00000000
LR is at 402cd8d8
pc : [<00000000>] lr : [<402cd8d8>] Not tainted
sp : be1ffacc ip : 00000000 fp : be1ffb14
r10: 40314628 r9 : 000001d4 r8 : befffdac
r7 : 00010005 r6 : 00000050 r5 : 00000000 r4 : 00000000
r3 : 000028a0 r2 : 40316ec8 r1 : 0325c520 r0 : 00000000
Flags: nZCv IRQs on FIQs on Mode USER_32 Segment user
Control: C000717F Table: 06548000 DAC: 00000015
Task pid: 99 Thread_name: ptPktRxThread
Application version:
Back-trace Start:
[<010809a0>] from [<0107fd90>]
[<0107fd50>] from [<40022a74>]
Back-trace End:

Не подскажете в чем причина?