Daily intermittent outages

Been having intermittent internet issues the last few weeks. Will lose internet for anywhere from 5-15 minutes most of the time anywhere from 5+ times during the day (but usually every few hours). Devices can still connect to the gateway (wired and wireless), so just losing internet.

 

We had a ~4 year old xb3 modem so first thing that was done when I called it in is they sent a different xb3. The issue persisted  so then a tech was dispatched and checked the main drop in the house and outside. Since the outages were intermittent we weren't experiencing it during the time the tech was here. Think the tech said he replaced a connector at the box outside, but that everything looked ok to him.

 

Continued to have the same issues after that visit, so upgraded to a xb6 (Model:TG3482G, Vendor:ARRIS Group, Inc.) and same issue persist, going on about week 5 of the problem. Coax from the sidewalk comes into the house and into a 2-way splitter (installed ~4-5 years ago by installer), one line from there to living room outlet (nothing connected, never has been) and one to the gateway. Also tried a new good quality 2-way splitter and same problem. All connections are tight, and when it works it works well and speeds are right at the max for our plan. When it cuts out, it comes back automatically without requiring a reset.

 

Downstream (32 channels)

all channels locked except 0 (shows UNKNOWN for modulation too)
SNR - all range between 40.3 and 40.9
Power level: all range between +1.5 and +4.5
Modulation: QAM256

 

Index	20	0	17	18	19	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36	37	38	39	40	41	42	43	44	45	46	47
Lock Status	Locked	NotLocked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked
Frequency	519000000		501000000	507000000	513000000	525000000	531000000	537000000	543000000	549000000	555000000	561000000	567000000	573000000	579000000	585000000	591000000	597000000	603000000	615000000	621000000	627000000	633000000	639000000	645000000	651000000	657000000	663000000	669000000	675000000	681000000	687000000	629600000
SNR	40.366287		40.946209	40.946209	40.366287	40.946209	40.946209	40.366287	40.946209	40.946209	40.946209	40.946209	40.946209	40.946209	40.366287	40.946209	40.946209	40.366287	40.946209	40.946209	40.366287	40.946209	40.946209	40.946209	40.946209	40.946209	40.946209	40.366287	40.946209	40.366287	40.946209	40.946209	NA
Power Level	3.500000		3.099998	3.200001	3.299999	3.700001	4.000000	4.099998	4.000000	4.300003	4.199997	4.300003	4.400002	4.199997	4.099998	4.000000	4.000000	3.900002	3.900002	3.599998	3.500000	3.799999	3.599998	3.599998	3.299999	3.200001	3.000000	2.900002	2.700001	2.200001	2.000000	1.500000	NA
Modulation	QAM256	UNKNOWN	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	OFDM

 

Upstream (4 channels)

Power level: all range between +44 to +45

 

Index	1	2	3	4
Lock Status	Locked	Locked	Locked	Locked
Frequency	17300000	36700000	30300000	23700000
Symbol Rate	5120 KSym/sec	5120 KSym/sec	5120 KSym/sec	5120 KSym/sec
Power Level	45.020599	44.020599	44.020599	44.520599
Modulation	64QAM	64QAM	64QAM	64QAM
Channel Type	US_TYPE_ATDMA	US_TYPE_ATDMA	US_TYPE_ATDMA	US_TYPE_ATDMA

 

Event Logs show mostly IP release/DHCP messages. Even while the cut-out occurs the gateway downstream/upstream stats don't change much if at all.

 

It seems to happen at random times and nothing in our house (device or wiring wise) has changed. Up to about 5 weeks ago everything had always been reliable and never any issues like this.

 

Have a tech coming out tomorrow morning, but any advice or suggestions would be appreciated.  I known nothing about this stuff, but this kind of feels like something at the drop outside, maybe some noise in the line there or between there and some main/head unit. Just not sure how to best convey that to get those checked and ruled out.