Rookie

Internet dropping

I've been having intermittent drops over the past couple of weeks.  Some are short, solved by the modem resetting itself, others last for a long period.  I have an SB6183 modem.

Thu Apr 25 03:28:55 2019Warning (5)MDD message timeout;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:28:45 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:28:31 2019Warning (5)MDD message timeout;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:28:31 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:27:05 2019Notice (6)TLV-11 - unrecognized OID;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:27:05 2019Error (4)Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:27:05 2019Error (4)Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Time Not EstablishedNotice (6)Overriding MDD IP initialization parameters; IP provisioning mode = IPv6
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Thu Apr 25 03:12:09 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Thu Apr 25 03:12:06 2019Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:12:06 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:12:01 2019Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:12:01 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:11:48 2019Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:11:48 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:11:45 2019Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:11:45 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 03:11:41 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:21:33 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:18:25 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:17:53 2019Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:17:35 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:17:34 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:17:24 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:17:20 2019Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:17:20 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:17:11 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Thu Apr 25 02:10:00 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Thu Apr 25 02:09:57 2019Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:09:57 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:09:56 2019Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:09:56 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 02:09:40 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Thu Apr 25 00:58:54 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Thu Apr 25 00:58:51 2019Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 00:58:51 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 00:58:48 2019Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 00:58:48 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 00:58:41 2019Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 00:58:40 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 00:58:30 2019Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 00:58:29 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 00:58:27 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Thu Apr 25 00:58:12 2019Critical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=74:ea:e8:ef:de:b6;CMTS-MAC=00:01:5c:78:82:4b;CM-QOS=1.1;CM-VER=3.0;
Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectedUncorrectables
1LockedQAM2565567000000 Hz11.5 dBmV41.8 dB00
2LockedQAM2561543000000 Hz12.3 dBmV42.7 dB00
3LockedQAM2562549000000 Hz12.0 dBmV42.4 dB00
4LockedQAM2563555000000 Hz11.9 dBmV42.2 dB00
5LockedQAM2564561000000 Hz11.7 dBmV42.1 dB00
6LockedQAM2566573000000 Hz11.4 dBmV41.3 dB00
7LockedQAM2567579000000 Hz11.2 dBmV41.3 dB00
8LockedQAM2568585000000 Hz11.1 dBmV41.2 dB00
9LockedQAM2569591000000 Hz11.1 dBmV41.0 dB00
10LockedQAM25610597000000 Hz11.0 dBmV41.0 dB00
11LockedQAM25611603000000 Hz10.9 dBmV40.9 dB00
12LockedQAM25612609000000 Hz10.4 dBmV40.5 dB00
13LockedQAM25613615000000 Hz10.3 dBmV40.2 dB00
14LockedQAM25614621000000 Hz10.0 dBmV40.3 dB00
15LockedQAM25615627000000 Hz9.5 dBmV40.2 dB00
16LockedQAM25616633000000 Hz9.6 dBmV40.2 dB00

 

 
Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA435120 Ksym/sec30600000 Hz28.8 dBmV
2LockedATDMA415120 Ksym/sec17800000 Hz27.0 dBmV
3LockedATDMA425120 Ksym/sec24200000 Hz28.0 dBmV
4LockedATDMA445120 Ksym/sec37000000 Hz30.0 dBmV
3 REPLIES 3
Highlighted
Sharer

Re: Internet dropping

The modem's upstream levels are unusually low. May be an amp in play that needs to be tuned, or possibly even removed?
Rookie

Re: Internet dropping

I have a very simple setup,  One wire comes in from outside, goes to a pass-through connector with a ground wire leading off of it, and one wire directly to the modem.  No splitters or anything else inside or immediately outside the house.  Is the amp something that would be on the street?

Sharer

Re: Internet dropping

Could be something in their "tombstone" outside. IDK if they still use the old clamshell casings with the gain adjustments or not. But depending on the infrastructure in your area, there could be something still on the ground level that could be tuned. Would need a tech visit to inspect everything... might need escalation for another team depending on how everything is laid out in your neighborhood.

Upstream power levels are typically about 10 higher across the board, which is a common boost level for basic drop amps people can pick up at various places online (the headend tells the modem to adjust power level based on the level it receives at the other end, so if it is over-boosted, the modem's output will be really low). Some of them aren't very "clean", which can lead to a pretty noisy line.