>А в логах что нибудь остается?
>У Вас лог вообще включен?
В логах ничего подозрительного нету (вот последние 20)
Feb 3 21:13:18 10.21.0.25 263: 23:51:30: %ISDN-6-CONNECT: Interface BRI1/0:1 is now connected to unknown
Feb 3 21:13:40 10.21.0.25 264: 23:51:52: %LINK-3-UPDOWN: Interface Async93, changed state to up
Feb 3 21:13:45 10.21.0.25 265: 23:51:57: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async93, changed state to up
Feb 3 21:15:39 10.21.0.25 266: 23:53:50: %ISDN-6-CONNECT: Interface BRI1/3:2 is now connected to unknown
Feb 3 21:16:02 10.21.0.25 267: 23:54:13: %LINK-3-UPDOWN: Interface Async94, changed state to up
Feb 3 21:16:12 10.21.0.25 268: 23:54:24: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async94, changed state to up
Feb 3 21:33:19 10.21.0.25 269: 1d00h: %ISDN-6-DISCONNECT: Interface BRI1/0:1 disconnected from unknown , call lasted 1206 seconds
Feb 3 21:33:20 10.21.0.25 270: 1d00h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async93, changed state to down
Feb 3 21:33:23 10.21.0.25 271: 1d00h: %LINK-5-CHANGED: Interface Async93, changed state to reset
Feb 3 21:33:28 10.21.0.25 272: 1d00h: %LINK-3-UPDOWN: Interface Async93, changed state to down
Feb 3 22:18:01 10.21.0.25 273: 1d00h: %ISDN-6-DISCONNECT: Interface BRI1/3:1 disconnected from unknown , call lasted 6428 seconds
Feb 3 22:18:02 10.21.0.25 274: 1d00h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async92, changed state to down
Feb 3 22:18:05 10.21.0.25 275: 1d00h: %LINK-5-CHANGED: Interface Async92, changed state to reset
Feb 3 22:18:10 10.21.0.25 276: 1d00h: %LINK-3-UPDOWN: Interface Async92, changed state to down
Feb 3 23:18:00 10.21.0.25 277: 1d01h: %ISDN-6-CONNECT: Interface BRI1/3:1 is now connected to unknown
Feb 3 23:18:21 10.21.0.25 278: 1d01h: %LINK-3-UPDOWN: Interface Async65, changed state to up
Feb 3 23:18:27 10.21.0.25 279: 1d01h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async65, changed state to up
Feb 3 23:55:02 10.21.0.25 280: 1d02h: %ISDN-6-CONNECT: Interface BRI1/0:1 is now connected to unknown
Feb 3 23:55:25 10.21.0.25 281: 1d02h: %LINK-3-UPDOWN: Interface Async66, changed state to up
Feb 3 23:55:31 10.21.0.25 282: 1d02h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async66, changed state to up
Feb 4 00:02:57 10.21.0.25 283: 1d02h: %ISDN-6-DISCONNECT: Interface BRI1/0:1 disconnected from unknown , call lasted 481 seconds
Feb 4 00:02:58 10.21.0.25 284: 1d02h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Async66, changed state to down
Feb 4 00:03:01 10.21.0.25 285: 1d02h: %LINK-5-CHANGED: Interface Async66, changed state to reset
Feb 4 00:03:06 10.21.0.25 286: 1d02h: %LINK-3-UPDOWN: Interface Async66, changed state to down