Symptom: Modem will not Range Upstream and will never come online.įix: This cannot be fixed by the user and will need technician to check the plant and also need to call headend office to fix the signal sent to home T2 ( No Maintenance Broadcasts for Ranging opportunities received )Įxplanation: The cable modem did not receive a broadcast maintenance opportunity in which to transmit a Ranging Request (RNG-REQ) within the T2 timeout period (approximately 10 seconds). Occurrence: Very rare in the customer homes This error message is DOCSIS event message is U01.0, Upstream Channel Descriptor. There are 5 types of DOCSIS Cable Modem Timeouts Error messages: T1 ( No UCD’s received )Įxplanation: The cable modem has not received any periodic Upstream Channel Descriptor (UCD) messages from the CMTS within the timeout period. Most of these errors will lead to either modem dropping offline or not even coming online at all and it is important to fix or reduce some of these errors.
They are typically displayed due to an issue in your wiring, bad cables, Bad node, Bad signal from your ISP, wrong configuration in ISP CMTS/Headend, plant noise, Signal interference, and many other possibilites.
If you have a Cable Modem for Internet services at your home, you might have most likely seen one of these DOCSIS Timeout messages.
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