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Netguy333's avatar
Netguy333
Aspirant
May 04, 2020
Solved

VoIP connections dropping with Netgear CM500V

Hi, I have been experiencing application disconnects with various applications that use Voice over IP. Hoping someone in this forum may have some suggestions. Here are the details. Use VOIP with th...
  • FURRYe38's avatar
    FURRYe38
    May 04, 2020

    So to rule out the stacked router configuration, connect one PC directly to the modem and see if you still encounter problems there. IF you do then the problem is with the modem or ISP services. If you don't see problems, then the problem is downstream starting with the DIR router and your router configuration there. 

     

    Suggested configuration would be DIR router to other two routers configured for AP mode. Or input one of the routers in router mode in the DIR-655 DMZ for better network flow thru NAT. 

     

     

     

FURRYe38's avatar
FURRYe38
Guru - Experienced User
May 04, 2020

What happens if you connect PCs directly to the D-Link router only? 

What is the model# of the D-Link router? 

 

Having two other routers on the same line behind the D-Link router will cause problems. Especially NAT problems. 

https://kb.netgear.com/30186/What-is-Double-NAT

 

Have the ISP check the signal and line quality UP to the modem. 
Be sure there are no coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 

Netguy333 wrote:

Hi,

I have been experiencing application disconnects with various applications that use Voice over IP. Hoping someone in this forum may have some suggestions. Here are the details.

Use VOIP with the following apps, and they all end up disconnecting while using them (can go for 40-60 minutes or as little as 10 minutes before the connection drop occurs):
Skype (Windows 10 app, not using video, just voice)
Teams (Windows 10 app, not using video, just voice)
Zoom (Windows 10 app, not using video, just voice)
Borderlands 3 (Windows 10 app)
Overwatch (Windows 10 app)


The connection typically re-establishes itself within about 10-30 seconds typically, so the connection persists through the drop.
This issue wasn’t happening prior to 4/21/2020. I installed my CM500V on 12/29/2019, and it has been working fine with these apps until 4/21/2020.


Internet speeds are always fine (~90 Megabits per second down, 5 up), and other applications (web browsers, etc.) continue to work fine for me during these outage blips.


I can have anywhere from 1 to 3 Windows 10 PC’s on the network at any given time, and this issue can be happening to more than one PC.

 

Comcast / Xfinity is my ISP. I have called (chatted) with them a couple of times and both times they have reset my Netgear CM500V Cable modem but that hasn’t fixed it. They also suggested I get a new cable modem, which I of course said no to as I am not convinced the issue is with my cable modem.


I tried connecting a PC directly to the cable modem to see if the issue persists in that setup, but I couldn’t get internet connection that way (might need to recycle my cable modem to get that to work, so may try that later). Here is my LAN setup:

 

NETGEAR CM500V

                   |

              DLINK

           /              \

Synology              TPLINK


Router A (DLINK) connected to Netgear CM500V
Router B (Synology) connected to Router A (DLINK)
Router C (TPLINK) connected to Router A (DLINK)

 

I have tried putting my PC’s on each router, and the issue continues on each of them.


Attached is my event log of my Netgear CM500V.

 

Any help would be appreciated. Thanks!