sip loop detected

Здравствуйте.

Не первый раз замечаю, что ни с того, ни с сего коммунигейт перестает как-либо взаимодействовать с внешним миром и пишет в логи следующее по всем пользователям вообще то, что ниже.

У пользователя с алиасом 74957445607 external password disabled, в domain settings стоит calls to unknown rerouted to соотв пользователя, от имени которого обращается коммунигейт к внешнему скрипту. Но в данном случае он не должен к нему обращаться. Скрипт тоже запущен, но в него не попадало от коммунигейта вообще ничего. Каковы причины такого явления ? Спасибо.

15:15:49.274 5 SIP [0.0.0.0]:5060 <- [195.14.33.148]:13690 inp(439): REGISTER sip:195.14.50.93:5060 SIP/2.0\r\nVia: SIP/2.0/UDP 192.168.1.4:5060;branch=z9hG4bKf1db78c5a7788c\r\nFrom: <sip:74957445607@195.14.50.93;user=phone>;tag=8250973977D2B9805DD9\r\nTo: <sip:74957445607@195.14.50.93;user=phone>\r
15:15:49.274 2 SIPDATA-000653 inp: req [0.0.0.0]:5060 <- udp [195.14.33.148]:13690 REGISTER(439 bytes) sip:195.14.50.93:5060
15:15:49.274 5 SIPDATA-000653 inp: REGISTER sip:195.14.50.93:5060 SIP/2.0
15:15:49.274 5 SIPDATA-000653 inp: Via: SIP/2.0/UDP 192.168.1.4:5060;branch=z9hG4bKf1db78c5a7788c
15:15:49.274 5 SIPDATA-000653 inp: From: <sip:74957445607@195.14.50.93;user=phone>;tag=8250973977D2B9805DD9
15:15:49.274 5 SIPDATA-000653 inp: To: <sip:74957445607@195.14.50.93;user=phone>
15:15:49.274 5 SIPDATA-000653 inp: Call-ID: 19614-D1B9-1215-5CCF-4DF83E3F1D5D@192.168.1.4
15:15:49.274 5 SIPDATA-000653 inp: CSeq: 2618 REGISTER
15:15:49.274 5 SIPDATA-000653 inp: User-Agent: ZyXEL P2000W VoIP Wi-Fi Phone
15:15:49.274 5 SIPDATA-000653 inp: Contact: <sip:74957445607@192.168.1.4:5060;transport=udp>
15:15:49.274 5 SIPDATA-000653 inp: Expires: 300
15:15:49.274 5 SIPDATA-000653 inp: Content-Length: 0
15:15:49.274 5 SIPDATA-000653 inp: 
15:15:49.274 4 SIPDATA-000653 NATed [192.168.1.4]:5060 via [195.14.33.148]:13690
15:15:49.274 4 SIPDATA-000653 Hash=871991197
15:15:49.274 5 SIPS 402: enqueued
15:15:49.274 2 SIPS-000402 enqueued
15:15:49.274 5 SIPS-000402 INITIAL posted
15:15:49.274 2 SIPDATA-000653 created SIPS-000402
15:15:49.274 5 SIPS(11) 402: processing INITIAL
15:15:49.274 2 SIPS-000402 [000653] REGISTER sip:195.14.50.93:5060 from udp [195.14.33.148]:13690
15:15:49.274 4 SIPS-000402 NATed registration
15:15:49.274 2 SIGNAL-000402 enqueued
15:15:49.274 2 SIPS-000402 created SIGNAL-000402
15:15:49.274 5 SIPS(11) 402: idling
15:15:49.274 2 SIGNAL-000402 SIPS-000402: REGISTER sip:195.14.50.93:5060
15:15:49.274 2 SIGNAL-000402 REGISTER sip:195.14.50.93:5060 via sip:195.14.50.93:5060
15:15:49.274 2 SIGNAL-000402 relaying to sip:sip.corbina.ru via sip:sip.corbina.ru
15:15:49.274 5 SIPC 354: enqueued
15:15:49.274 2 SIPC-000354 enqueued
15:15:49.274 5 SIPC-000354 INITIAL posted
15:15:49.274 2 SIGNAL-000402 {1} sent to SIPC-000354: REGISTER sip:sip.corbina.ru
15:15:49.275 5 SIPC(78) 354: processing INITIAL
15:15:49.275 2 SIPC-000354 REGISTER sip:sip.corbina.ru
15:15:49.275 4 SIPC-000354 SRV resolving sip.corbina.ru(sip,udp)
15:15:49.276 3 DNR-000381(_sip._udp.sip.corbina.ru) SRV:host name is unknown
15:15:49.276 3 SIPC-000354 failed to find SRV records for sip.corbina.ru(sip,udp). Error Code=host name is unknown
15:15:49.276 4 SIPC-000354 resolving sip:sip.corbina.ru
15:15:49.278 4 SIPC-000354 resolved: 1 address(es)
15:15:49.278 4 SIPC-000354 trying: sip:195.14.50.93
15:15:49.278 3 SIPC-000354 failed to send to [195.14.50.93]:5060. Error Code=SIP loop detected
15:15:49.278 1 SIPC-000354 sending failed. Error Code=SIP loop detected
15:15:49.278 5 SIPC(78) 354: killing
15:15:49.278 2 SIPC-000354 dequeued
15:15:49.278 2 SIGNAL-000402 483 received from SIPC-000354
15:15:49.278 2 SIGNAL-000402 483 relaying
15:15:49.278 5 SIPS-000402 FINAL posted
15:15:49.278 2 SIGNAL-000402 dequeued
15:15:49.278 5 SIPS(71) 402: processing FINAL
15:15:49.278 2 SIPDATA-000654 out: rsp [0.0.0.0]:5060 -> udp [195.14.33.148]:13690 483-REGISTER(445 bytes)
15:15:49.278 5 SIPDATA-000654 out: SIP/2.0 483 SIP loop detected
15:15:49.278 5 SIPDATA-000654 out: Via: SIP/2.0/UDP 192.168.1.4:5060;branch=z9hG4bKf1db78c5a7788c;received=195.14.33.148
15:15:49.278 5 SIPDATA-000654 out: Path: <sip:195.14.33.148-13690.nat.cgatepro;lr>
15:15:49.278 5 SIPDATA-000654 out: From: <sip:74957445607@195.14.50.93;user=phone>;tag=8250973977D2B9805DD9
15:15:49.278 5 SIPDATA-000654 out: To: <sip:74957445607@195.14.50.93;user=phone>;tag=9578B393B4090DFC
15:15:49.278 5 SIPDATA-000654 out: Call-ID: 19614-D1B9-1215-5CCF-4DF83E3F1D5D@192.168.1.4
15:15:49.278 5 SIPDATA-000654 out: CSeq: 2618 REGISTER
15:15:49.278 5 SIPDATA-000654 out: Server: CommuniGatePro/5.1.0 _trial_
15:15:49.278 5 SIPDATA-000654 out: Content-Length: 0
15:15:49.278 5 SIPDATA-000654 out: 

-- 
Oleg V. Shumsky
Corbina Telecom NOC, VoIP Dept. Ph.: +7 495 7284000, ext. 2174, ICQ: 110474048