Unitymedia Ständige Disconnects seit Juli

[Holodan]

Hallo zusammen,

ich nutze seit geraumer Zeit Unitymedia 2play mit 50 Mbit/s. Das funktionierte zu Beginn auch gut, jedoch habe ich seit Juli ständig Probleme mit Verbindungsabbrüchen (beinah jede Stunde). Das Modem spuckt jedesmal die gleichen Fehler aus, es waren schon zwei Techniker hier, die die Leitung entstört haben, die Werte sind nun laut Techniker und Unitymedia Top. Das Modem (Cisco 3212) wurde gegen ein 3208 getauscht, ohne Erfolg.

Das Modem-LOG spuckt für heute folgendes aus:

Tue Nov 05 07:37:12 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Tue Nov 05 07:37:08 2013 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ... Tue Nov 05 07:37:08 2013 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries... Tue Nov 05 07:37:08 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Tue Nov 05 07:37:07 2013 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ... Tue Nov 05 07:37:07 2013 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries... Tue Nov 05 07:37:07 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Tue Nov 05 07:36:59 2013 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ... Tue Nov 05 07:36:59 2013 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries... Tue Nov 05 07:36:58 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Tue Nov 05 06:28:38 2013 84000500 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=18:... Tue Nov 05 06:28:35 2013 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ... Tue Nov 05 06:28:35 2013 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries... Tue Nov 05 06:28:35 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Tue Nov 05 06:28:26 2013 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ... Tue Nov 05 06:28:26 2013 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries... Tue Nov 05 06:28:26 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Tue Nov 05 05:41:21 2013 84000500 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=18:... Tue Nov 05 05:41:14 2013 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ... Tue Nov 05 05:41:14 2013 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries... Tue Nov 05 05:41:14 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Tue Nov 05 05:41:06 2013 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ... Tue Nov 05 05:41:06 2013 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries... Tue Nov 05 05:41:06 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Tue Nov 05 02:30:13 2013 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ... Tue Nov 05 02:30:13 2013 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries... Tue Nov 05 02:30:13 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Tue Nov 05 02:30:12 2013 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ... Tue Nov 05 02:30:12 2013 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries... Tue Nov 05 02:30:12 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Tue Nov 05 02:30:03 2013 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ... Tue Nov 05 02:30:03 2013 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries... Tue Nov 05 02:30:03 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Mon Nov 04 22:27:31 2013 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ... Mon Nov 04 22:27:31 2013 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries... Mon Nov 04 22:27:31 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Mon Nov 04 22:27:22 2013 82000800 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream ... Mon Nov 04 22:27:22 2013 82000600 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries... Mon Nov 04 22:27:22 2013 82000500 Critical (3) Started Unicast Maintenance Ranging - No Response received - ... Mon Nov 04 21:59:44 2013 84000500 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=18:...

Dies sind meine Modemwerte (Downstream):

Channel 1:
Channel ID: 16
Downstream Frequency:	602000000 Hz
Modulation:	256 QAM
Power Level: -4.0 dBmV
Signal to Noise Ratio: 37.1 dB
Channel 2:
Channel ID: 13
Downstream Frequency:	578000000 Hz
Modulation:	256 QAM
Power Level: -1.5 dBmV
Signal to Noise Ratio: 39.1 dB
Channel 3:
Channel ID: 14
Downstream Frequency:	586000000 Hz
Modulation:	256 QAM
Power Level: -1.6 dBmV
Signal to Noise Ratio: 39.2 dB
Channel 4:
Channel ID: 15
Downstream Frequency:	594000000 Hz
Modulation:	256 QAM
Power Level: -1.9 dBmV
Signal to Noise Ratio: 38.8 dB
Channel 5:
Channel ID: 17
Downstream Frequency:	618000000 Hz
Modulation:	256 QAM
Power Level: -2.1 dBmV
Signal to Noise Ratio: 38.6 dB
Channel 6:
Channel ID: 18
Downstream Frequency:	626000000 Hz
Modulation:	256 QAM
Power Level: -1.4 dBmV
Signal to Noise Ratio: 39.0 dB
Channel 7:
Channel ID: 19
Downstream Frequency:	634000000 Hz
Modulation:	256 QAM
Power Level: -0.3 dBmV
Signal to Noise Ratio: 39.7 dB
Channel 8:
Channel ID: 20
Downstream Frequency:	642000000 Hz
Modulation:	256 QAM
Power Level: -3.4 dBmV
Signal to Noise Ratio: 38.4 dB

Und der Upstream:

Channel1:
Channel ID:	7
Upstream Frequency:	45200000 Hz
Modulation:	16 QAM
Bit Rate:	20480 kBits/sec
Power Level:	43.5 dBmV
Channel2:
Channel ID:	3
Upstream Frequency:	58400000 Hz
Modulation:	16 QAM
Bit Rate:	20480 kBits/sec
Power Level:	44.5 dBmV
Channel3:
Channel ID:	4
Upstream Frequency:	51800000 Hz
Modulation:	16 QAM
Bit Rate:	20480 kBits/sec
Power Level:	44.0 dBmV
Channel4:
Channel ID:	8
Upstream Frequency:	37400000 Hz
Modulation:	16 QAM
Bit Rate:	20480 kBits/sec
Power Level:	42.0 dBmV

Der Disconnect besteht immer für Sekunden, ohne dass Lämpchen am Modem ausfallen. Betroffen ist neben dem Internet auch das Telefon. Anschluss steht in Düsseldorf Derendorf.
Ich bin eigentlich sonst immer zufrieden gewesen und hatte immer vollen Speed (habe ich heute noch, wenn alles klappt) und würde gerne bei UM bleiben. Habt ihr Erfahrungen und/oder Tipps, woran das Problem liegen könnte, dass ich Unitymedia und den Techniker drauf hinweise?

PS: Während ich den Beitrag schrieb kam direkt der nächste Ausfall.