ok.. anbei also die inhalte des debug.
da steht wirklich irgend etwas von multiple calls drin.

wie und warum das denn?
21:04:32,843: Connect Request: 97391074 to 08001721212
21:04:32,859: Connect Confirm
21:04:33,859: Info Indication: setup acknowledge
21:04:33,859: Info Response
21:04:33,859: Info Indication: B1
21:04:33,875: Info Response
21:04:41,656: Info Indication: alerting
21:04:41,671: Info Response
21:04:41,671: Info Indication: in-band information or an appropriate pattern is now available
21:04:41,687: Connect B3 Request
21:04:41,687: Info Response
21:04:41,718: Connect B3 Confirm
21:04:41,718: Connect B3 Active Indication
21:04:41,828: WaveOut (0): open
21:04:41,828: Connect B3 Active Response
21:04:41,843: waveOut opened
21:04:42,046: Info Indication: connect
21:04:42,046: Info Response
21:04:42,062: Info Indication: 17.04.06 21:04
21:04:42,062: Info Response
21:04:42,062: delivered connected party number: 8001721212
21:04:42,062: Connect Active Indication: 08001721212
21:04:42,078: Connect Active Response
21:04:56,703: Disconnect B3 Request
21:04:56,718: Disconnect B3 Confirm
21:04:56,718: Disconnect B3 Indication
21:04:56,718: WaveOut (0): close
21:04:56,718: Disconnect Request
21:04:56,734: Disconnect B3 Response
21:04:56,734: Disconnect Confirm
21:04:56,734: waveOut closed
21:04:57,078: Disconnect Indication:
21:04:57,109: Disconnect Response
21:05:11,515: Connect Indication
21:05:11,515: CIP: 16 (telephony)
21:05:11,515: CalledPartyNumber: 97391074
21:05:11,515: CallingPartyNumber: 0172xxxxxxxx
21:05:11,531: phone book lookup for 0172xxxxxxxx: +49 (172) xxxxxxxx [Home]
21:05:11,531: Alert Request
21:05:11,875: Info Indication: 97391074
21:05:11,890: Info Response
21:05:11,890: Info Indication: B1
21:05:11,890: Info Response
21:05:11,890: Connect Indication
21:05:11,906: CIP: 16 (telephony)
21:05:11,906: CalledPartyNumber: 97391074
21:05:11,906: CallingPartyNumber: 0172xxxxxxx
21:05:11,906: phone book lookup for 0172xxxxxxx: +49 (172) xxxxxxx [Home]
21:05:11,906: Alert Request
21:05:12,125: Info Indication: 97391074
21:05:12,125: Info Response
21:05:12,125: Info Indication: B1
21:05:12,140: Info Response
21:05:12,140: Alert Confirm
21:05:12,156: Alert Confirm: Alert already sent by another application
21:05:26,312: activate answering machine
21:05:26,312: -> no answering machine for multiple calls (2) or call waiting!
21:05:26,312: Connect Response: reject call, user busy
21:05:26,312: activate answering machine
21:05:26,328: -> no answering machine for multiple calls (2) or call waiting!
21:05:26,328: Connect Response: reject call, user busy
21:05:26,578: Disconnect Indication:
21:05:26,796: Disconnect Response
21:05:26,812: Disconnect Indication:
21:04:32,843: Connect Request: 3F 00 08 00 02 80 D8 02 01 00 00 00 01 00 0C 80 30 38 30 30 31 37 32 31 32 31 32 0A 00 80 39 37 33 39 31 30 37 34 00 07 80 50 68 6F 6E 65 72 09 01 00 01 00 00 00 00 00 00 00 00 02 91 81 00
21:04:32,843: Connect Confirm: 0E 00 08 00 02 81 D8 02 01 17 00 00 00 00
21:04:33,859: Info Indication: 0F 00 08 00 08 82 FF 1A 01 17 00 00 0D 80 00
21:04:33,859: Info Response: 0C 00 08 00 08 83 FF 1A 01 17 00 00
21:04:33,859: Info Indication: 10 00 08 00 08 82 00 1B 01 17 00 00 18 00 01 89
21:04:33,875: Info Response: 0C 00 08 00 08 83 00 1B 01 17 00 00
21:04:41,656: Info Indication: 0F 00 08 00 08 82 01 1B 01 17 00 00 01 80 00
21:04:41,671: Info Response: 0C 00 08 00 08 83 01 1B 01 17 00 00
21:04:41,671: Info Indication: 11 00 08 00 08 82 02 1B 01 17 00 00 1E 00 02 82 88
21:04:41,671: Connect B3 Request: 0D 00 08 00 82 80 D9 02 01 17 00 00 00
21:04:41,687: Info Response: 0C 00 08 00 08 83 02 1B 01 17 00 00
21:04:41,718: Connect B3 Confirm: 0E 00 08 00 82 81 D9 02 01 17 01 00 00 00
21:04:41,718: Connect B3 Active Indication: 0D 00 08 00 83 82 03 1B 01 17 01 00 00
21:04:41,828: Connect B3 Active Response: 0C 00 08 00 83 83 03 1B 01 17 01 00
21:04:42,046: Info Indication: 0F 00 08 00 08 82 09 1B 01 17 00 00 07 80 00
21:04:42,046: Info Response: 0C 00 08 00 08 83 09 1B 01 17 00 00
21:04:42,046: Info Indication: 14 00 08 00 08 82 0A 1B 01 17 00 00 29 00 05 06 04 11 15 04
21:04:42,062: Info Response: 0C 00 08 00 08 83 0A 1B 01 17 00 00
21:04:42,062: Connect Active Indication: 1B 00 08 00 03 82 0B 1B 01 17 00 00 0C 21 83 38 30 30 31 37 32 31 32 31 32 00 00
21:04:42,062: Connect Active Response: 0C 00 08 00 03 83 0B 1B 01 17 00 00
21:04:56,703: Disconnect B3 Request: 11 00 08 00 84 80 DA 02 01 17 01 00 00 00 00 00 00
21:04:56,703: Disconnect B3 Confirm: 0E 00 08 00 84 81 DA 02 01 17 01 00 00 00
21:04:56,718: Disconnect B3 Indication: 0F 00 08 00 84 82 00 1C 01 17 01 00 01 33 00
21:04:56,718: Disconnect Request: 0D 00 08 00 04 80 DB 02 01 17 00 00 00
21:04:56,734: Disconnect B3 Response: 0C 00 08 00 84 83 00 1C 01 17 01 00
21:04:56,734: Disconnect Confirm: 0E 00 08 00 04 81 DB 02 01 17 00 00 00 00
21:04:57,078: Disconnect Indication: 0E 00 08 00 04 82 01 1C 01 17 00 00 00 34
21:04:57,109: Disconnect Response: 0C 00 08 00 04 83 01 1C 01 17 00 00
21:05:11,500: Connect Indication: 31 00 08 00 02 82 02 1C 01 18 00 00 10 00 09 C1 39 37 33 39 31 30 37 34 0C 21 83 31 37 32 36 35 39 39 31 31 30 00 00 03 80 90 A3 00 02 91 81 00 00
21:05:11,531: Alert Request: 0D 00 08 00 01 80 DC 02 01 18 00 00 00
21:05:11,875: Info Indication: 18 00 08 00 08 82 03 1C 01 18 00 00 70 00 09 C1 39 37 33 39 31 30 37 34
21:05:11,890: Info Response: 0C 00 08 00 08 83 03 1C 01 18 00 00
21:05:11,890: Info Indication: 10 00 08 00 08 82 04 1C 01 18 00 00 18 00 01 89
21:05:11,890: Info Response: 0C 00 08 00 08 83 04 1C 01 18 00 00
21:05:11,890: Connect Indication: 31 00 08 00 02 82 09 1C 02 19 00 00 10 00 09 C1 39 37 33 39 31 30 37 34 0C 21 83 31 37 32 36 35 39 39 31 31 30 00 00 03 80 90 A3 00 02 91 81 00 00
21:05:11,906: Alert Request: 0D 00 08 00 01 80 DD 02 02 19 00 00 00
21:05:12,125: Info Indication: 18 00 08 00 08 82 0A 1C 02 19 00 00 70 00 09 C1 39 37 33 39 31 30 37 34
21:05:12,125: Info Response: 0C 00 08 00 08 83 0A 1C 02 19 00 00
21:05:12,125: Info Indication: 10 00 08 00 08 82 0B 1C 02 19 00 00 18 00 01 89
21:05:12,125: Info Response: 0C 00 08 00 08 83 0B 1C 02 19 00 00
21:05:12,140: Alert Confirm: 0E 00 08 00 01 81 DC 02 01 18 00 00 00 00
21:05:12,140: Alert Confirm: 0E 00 08 00 01 81 DD 02 02 19 00 00 03 00
21:05:26,312: Connect Response: 26 00 08 00 02 83 02 1C 01 18 00 00 03 00 09 01 00 01 00 00 00 00 00 00 0A 00 80 39 37 33 39 31 30 37 34 00 00 00
21:05:26,328: Connect Response: 26 00 08 00 02 83 09 1C 02 19 00 00 03 00 09 01 00 01 00 00 00 00 00 00 0A 00 80 39 37 33 39 31 30 37 34 00 00 00
21:05:26,562: Disconnect Indication: 0E 00 08 00 04 82 12 1C 01 18 00 00 00 34
21:05:26,796: Disconnect Response: 0C 00 08 00 04 83 12 1C 01 18 00 00
21:05:26,812: Disconnect Indication: 0E 00 08 00 04 82 13 1C 02 19 00 00 00 34
21:05:26,937: Disconnect Response: 0C 00 08 00 04 83 13 1C 02 19 00 00
21:04:32,859: T: setup(16): 00 C9 12 12 08 01 16 05 04 03 80 90 A3 18 01 83 6C 0A 00 80 39 37 33 39 31 30 37 34 6D 07 80 50 68 6F 6E 65 72 70 0C 80 30 38 30 30 31 37 32 31 32 31 32 7D 02 91 81
21:04:33,843: R: setup acknowledge(16): 02 C9 12 14 08 01 96 0D 18 01 89
21:04:41,640: R: alerting(16): 02 C9 14 14 08 01 96 01 1E 02 82 88
21:04:42,046: R: connect(16): 02 C9 16 14 08 01 96 07 29 05 06 04 11 15 04 4C 0C 21 83 38 30 30 31 37 32 31 32 31 32
21:04:56,734: T: disconnect(16): 00 C9 14 18 08 01 16 45 08 02 80 90
21:04:57,046: R: release(16): 02 C9 18 16 08 01 96 4D
21:04:57,109: T: release complete(16): 00 C9 16 1A 08 01 16 5A 08 02 80 90
21:05:11,484: R: setup(3C): 02 FF 03 08 01 3C 05 A1 04 03 80 90 A3 18 01 89 6C 0C 21 83 31 37 32 36 35 39 39 31 31 30 70 09 C1 39 37 33 39 31 30 37 34 7D 02 91 81
21:05:12,140: T: alerting(3C): 00 C9 18 1A 08 01 BC 01
21:05:26,343: T: disconnect(3C): 00 C9 1A 1A 08 01 BC 45 08 02 80 91
21:05:26,546: R: release(3C): 02 C9 1A 1C 08 01 3C 4D
21:05:26,796: T: release complete(3C): 00 C9 1C 1C 08 01 BC 5A 08 02 80 90
21:05:26,812: R: release(3C): 02 CB 00 04 08 01 3C 4D
21:07:37,875: R: (00): FE FF FC 4C 31 53 54 41 54 45