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No Ranging Response received - T3 time-out **** multiple disconnects every day
I've been struggling with multiple disconnects every day. My xfinity cable drop is in the garage and from there it's connected to a Netgear CM700 modem. From the modem I'm connected to a DLink router. I have a TV connected from the router hard-wired. I see the disconnects on the TV while streaming multiple times during the day. My internet connection on the laptop also goes down when I'm working from home. I'm connected using WiFi on the laptop. I've tried contacting Xfinity Customer Service via multiple channels and they've all gone through multiple iterations of troubleshooting with no luck. The Tier 2 support won't help me because I don't have a leased modem from Xfinity! I checked the logs on the CM700 modem and occasionally I see the following errors:
No Ranging Response received - T3 time-out
I see the following in the modem log:
Procedure Status Comment
Acquire Downstream Channel 663000000 Hz Locked
Connectivity State Ok Operational
Boot State Ok Operational
Security Enabled BPI+
IP Provisioning Mode Honor MDD honorMdd(4)
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables UnCorrectables
1 Locked QAM 256 1 483000000 Hz 4.5 dBmV 38.6 dB 0 0
2 Locked QAM 256 2 489000000 Hz 4.5 dBmV 38.6 dB 11 0
3 Locked QAM 256 3 495000000 Hz 4.3 dBmV 38.6 dB 7 0
4 Locked QAM 256 4 507000000 Hz 4.4 dBmV 38.6 dB 0 0
5 Locked QAM 256 5 513000000 Hz 4.5 dBmV 38.9 dB 0 0
6 Locked QAM 256 6 519000000 Hz 4.5 dBmV 38.6 dB 0 0
7 Locked QAM 256 7 525000000 Hz 4.3 dBmV 38.6 dB 3 0
8 Locked QAM 256 8 531000000 Hz 4.4 dBmV 38.6 dB 9 0
9 Locked QAM 256 9 543000000 Hz 4.5 dBmV 38.6 dB 0 0
10 Locked QAM 256 10 549000000 Hz 4.3 dBmV 38.6 dB 0 0
11 Locked QAM 256 11 555000000 Hz 4.0 dBmV 38.6 dB 0 0
12 Locked QAM 256 12 561000000 Hz 4.0 dBmV 37.6 dB 0 0
13 Locked QAM 256 13 567000000 Hz 4.0 dBmV 38.6 dB 0 0
14 Locked QAM 256 14 573000000 Hz 3.9 dBmV 37.6 dB 0 0
15 Locked QAM 256 15 579000000 Hz 3.7 dBmV 38.6 dB 0 0
16 Locked QAM 256 16 585000000 Hz 3.5 dBmV 38.6 dB 0 0
17 Locked QAM 256 17 591000000 Hz 3.5 dBmV 38.6 dB 0 0
18 Locked QAM 256 18 597000000 Hz 3.5 dBmV 37.6 dB 0 0
19 Locked QAM 256 19 603000000 Hz 3.4 dBmV 37.6 dB 0 0
20 Locked QAM 256 20 609000000 Hz 3.5 dBmV 37.6 dB 0 0
21 Locked QAM 256 21 615000000 Hz 3.5 dBmV 38.6 dB 4 0
22 Locked QAM 256 22 621000000 Hz 3.0 dBmV 37.3 dB 6 0
23 Locked QAM 256 23 627000000 Hz 2.4 dBmV 37.3 dB 3 0
24 Locked QAM 256 24 633000000 Hz 2.0 dBmV 37.6 dB 0 0
25 Locked QAM 256 25 639000000 Hz 1.7 dBmV 37.6 dB 0 0
26 Locked QAM 256 26 645000000 Hz 1.5 dBmV 37.3 dB 0 0
27 Locked QAM 256 27 651000000 Hz 1.5 dBmV 37.9 dB 0 0
28 Locked QAM 256 28 657000000 Hz 1.5 dBmV 37.9 dB 12 0
29 Locked QAM 256 29 663000000 Hz 1.5 dBmV 37.6 dB 5 0
30 Locked QAM 256 30 669000000 Hz 1.7 dBmV 37.6 dB 7 0
31 Locked QAM 256 31 675000000 Hz 1.5 dBmV 37.3 dB 4 0
32 Locked QAM 256 32 681000000 Hz 1.7 dBmV 37.3 dB 0 0
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 3 5120 Ksym/sec 17300000 Hz 42.3 dBmV
2 Locked ATDMA 4 5120 Ksym/sec 23700000 Hz 42.3 dBmV
3 Locked ATDMA 1 5120 Ksym/sec 30100000 Hz 42.3 dBmV
4 Locked ATDMA 2 5120 Ksym/sec 36500000 Hz 42.3 dBmV
5 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV
6 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV
Please help. This is getting quite frustrating!
9 Replies
Disconnect the D-Link router from the modem to isolate the issue.
Be sure you don't have any coax cable line splitters in between the modem and ISP service box.
It's up to the ISP to ensure you have good signal and line quality up to the modem.
Test with a wired PC directly connected to the modem. If you do experience same issues with this PC, try another modem out to see if same thing happens. IF it does, then ISP needs to send someone out and check the line up to the modem. If not, then you'll know you may have a faulty modem.
What is the model # of the D-Link router?
Will check on the splitter, if there is any. Is there a utility i can run on a laptop connected directly to the modem to monitor the status of the connection? Since the issue is intermittent it happens randomly multiple times during the day. Yesterday it was about once every hour. Also, since there's only one connection out from the modem, essentially i'll be disconnecting the internet from all devices in my home, so I would prefer to run this test overnight.
The D-Link router is DIR-655 which is quite old but it's in the garage right next to the modem and all it's doing is providing wired connections across my home.What Rev# is the 655? That was a good router.
PingPlotter.com would be recommended on a PC connected directly to the modem and let it run. It should pick up issues. If it does, check the for spitters then also have the ISP check there logs for these times when you notice this happening.
