Проблема с voibe на астериске Опции

[Allexey]

Доброго времени суток !
Есть АТС ldk-300 (3.6Df), есть сервер астериск (1.6.0.26-1_trixbox), а есть плата Voibe: с прошивкой GS30H-2.1Dc примерно раз в 10 минут отваливается от астериска, выглядит в логах так

[Jul 5 21:56:47] NOTICE[3144] chan_sip.c: Peer '178' is now UNREACHABLE! Lastqualify: 15
[Jul 5 21:56:47] DEBUG[3129] pbx.c: FONALITY: This thread has already held the conlock, skip locking
[Jul 5 21:56:47] NOTICE[3144] chan_sip.c: Peer '184' is now UNREACHABLE! Last qualify: 15
[Jul 5 21:56:47] DEBUG[3129] pbx.c: FONALITY: This thread has already held theconlock, skip locking
[Jul 5 21:56:48] NOTICE[3144] chan_sip.c: Peer '179' is now UNREACHABLE! Lastqualify: 15
[Jul 5 21:56:48] DEBUG[3129] pbx.c: FONALITY: This thread has already held the conlock, skip locking
[Jul 5 21:56:50] VERBOSE[3144] logger.c: -- ast_get_srv: SRV lookup for '_sip._UDP.sipnet.ru' mapped to host sipnet.ru, port 5060
[Jul 5 21:56:52] VERBOSE[3144] logger.c: -- ast_get_srv: SRV lookup for '_sip._UDP.sipnet.ru' mapped to host sipnet.ru, port 5060
[Jul 5 21:56:57] VERBOSE[3144] logger.c: -- Registered SIP '178' at 10.10.0.10 port 5060
[Jul 5 21:56:57] NOTICE[3144] chan_sip.c: Peer '178' is now Reachable. (50ms /2000ms)
[Jul 5 21:56:57] DEBUG[3129] pbx.c: FONALITY: This thread has already held the conlock, skip locking
[Jul 5 21:56:57] VERBOSE[3144] logger.c: -- Registered SIP '184' at 10.10.0.10 port 5060
[Jul 5 21:56:57] VERBOSE[3144] logger.c: -- Registered SIP '179' at 10.10.0.10 port 5060
[Jul 5 21:56:57] NOTICE[3144] chan_sip.c: Peer '184' is now Reachable. (28ms /2000ms)
[Jul 5 21:56:57] DEBUG[3129] pbx.c: FONALITY: This thread has already held theconlock, skip locking
[Jul 5 21:56:57] NOTICE[3144] chan_sip.c: Peer '179' is now Reachable. (35ms /2000ms)

с прошивкой Gs30HB2Ad плата не теряет регистрацию с астериском, но при этом при входящем звонке на voibe - короткие гудки
на этом же астериске висят voip телефоны siemens, voip шлюз dlink и порядка 10 шлюзов Linksys с ними проблем не замечалось.

Какие нибудь есть варианты ?