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MartyT
join:2004-09-03
Georgetown, SC
| [TWC] Can only connect throught router - not through modem Location: Georgetown SC
Cable modem: Scientific Atlanta with VOIP
Problem: Dell desktop computer with fresh install of XP and upgraded to SP3 will not browse the Internet when directly connected to the cable modem. DHCP works and obtains a TWC IP address and DNS server addresses. No ping to FQDN's, but ping to IP addresses works. Looks like a DNS issue, but substituting OpenDNS servers makes no difference.
When a router is inserted between the PC and the cable modem, all problems go away. The Ethernet driver on the computer is from the Dell drivers website.
To further complicate, I also tested the cable modem with a direct PC connection using a Compaq laptop. The laptop works fine without the router, but the Dell won't.
Never seen such behavior like this. Any clues? | |
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MacLeech
The one and only
Premium
join:2001-07-14
SoCal | Re: [TWC] Can only connect throught router - not through modem What IP does the Dell receive when connected to the modem? Do you reset the modem when changing the device connected to it? | |
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rra
Advice
join:2008-09-19
Kingsville, MO
| voip modems are wierd.
1 remove the power from the modem
2 remove the battery from the modem.
3 connect the device you intent to use.
4 restore power to modem
5 restore the battery.
6 power up the device you intend to use with the modem
fyi if you ever change the device connect to modem. (whether it is direct to device or router) repeat these steps. | |
| | MartyT
join:2004-09-03
Georgetown, SC
| Re: [TWC] Can only connect throught router - not through modem I'm getting a 65.xx.xx.xx address and doing all the power cycling. I did not pull the battery, but I did push the reset button to see if that would help.
Time Warner is no help by the way. Can't trust them to do much of anything on the phone.
I'll try the battery removal trick. I agree, VOIP cable modems have introduced weird issues into what used to be a simple "pull the power and reboot" mantra. | |
| | | Mele20
Premium
join:2001-06-05
Hilo, HI
| Re: [TWC] Can only connect throught router - not through modem Wow! That is an outstanding reason to NEVER get VoIP. I wouldn't think of putting up with having to remove a battery everytime the modem trips offline and I have to restart everything or because I want to connect directly via the modem for troubleshooting purposes, etc. Of course, I wouldn't have to worry about that in Hawaii as Oceanic TW does not provide battery backup for VoIP. Another outstanding reason to never get VoIP (as you are a dead duck if you need 911 and the power is off). A third outstanding reason is that Scientific Atlanta modems suck and I would never give up my Motorola Surfboard for one of them.
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"The same ferocity that our founders devoted to protect the freedom and independence of the press is now appropriate for our defense of the freedom of the internet. The stakes are the same: the survival of our Republic". Al Gore, The Assault on Reason | |
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MacLeech
The one and only
Premium
join:2001-07-14
SoCal
4 edits | Re: [TWC] Can only connect throught router - not through modem 1. You don't have to remove the battery, there's a reset button on the majority of eMTAs with batteries.
2. If your VOIP provider doesn't include batteries, you can buy them separately or plug the unit in to an external UPS. Most ISPs in most areas provide batteries now, if you're really interested check with the local provider's office for their latest offerings. Also, no matter who the land line phone provider, users have to make sure they plug in a phone that does not REQUIRE external power. Many people forget this and have live phone service in a power outage but don't have a phone to use because all they have require external power. Battery backup included is a nice advantage cable VOIP providers commonly have which 3rd parties like Vonage don't.
3. SA eMTAs don't suck as there are thousands in service without issue, but they're also not the only eMTAs available. Depending on the area Arris, SA, Moto, and/or a few other models may be available.
P.S. The Arris 502 model TWC issued me works great, has a reset button, and has a battery backup.
I think the OPs issue is really a problem with his computer. | |
| | | | | Mele20
Premium
join:2001-06-05
Hilo, HI
| Re: [TWC] Can only connect throught router - not through modem said by MacLeech  :2. If your VOIP provider doesn't include batteries, you can buy them separately or plug the unit in to an external UPS. Most ISPs in most areas provide batteries now, if you're really interested check with the local provider's office for their latest offerings. 3. SA eMTAs don't suck as there are thousands in service without issue, but they're also not the only eMTAs available. Depending on the area Arris, SA, Moto, and/or a few other models may be available. How could I buy batteries separately when Oceanic does NOT provide a modem that uses batteries? Oceanic has stated to the PUC that they will probably NEVER provide ANY sort of backup for VoIP. Hence their MickeyMouse application to the PUC. Oceanic's VoIP is NOT Carrier Class service and may never be due to very high costs to provide backup at the nodes, CMTS, etc. as well as the immense problems with batteries at the users homes in a marine environment. Oceanic stated that their VoIP is mostly just for the heck of it since the subscriber will need a landline also ...that is in the PUC application...of course they don't blatantly say that in their advertising. Very few folks read the PUC application so they know only what Oceanic says in their ads. It is possible, of course, that this is changing and I have not inquired about any possible progress in backup for VoIP in quite awhile, but as of currently there is no backup and as far as I know the modems are still not ones where you could put your own battery. Plus, there are no Motorola ones and that is the only brand I would find acceptable.
I suppose my earlier post made it sound like Oceanic provides batteries or at least a modem capable of using batteries. Sorry, for the confusion. I was just reacting to the idea that IF Oceanic ever did offer battery backup that I wouldn't want VoIP even then because I would have to remove the battery if I had problems.
As for hooking the VoIP modem to a UPS, my APC Broadband UPS provides about 5 minutes of backup time ...it claims much greater than that but in reality it provides just enough time for the PowerChute software to put the computer in hibernation and then shut down. The battery is only one year old (a replacement for the original one). I can't imagine how expensive it would be to have a UPS that could provide at LEAST four hours of battery backup for VoiP.
I simply do not understand why folks want VoiP when it is SO MUCH more expensive than a landline (which is regulated so the price cannot soar, but with VoIP the price can be anything TW wants to charge) and even if you are in an area where TW provides battery backup that is only for about four hours. Power outages are frequently longer than that.
I just complained again to HawaiianTelCom about their not extending DSL service to my area of Hilo. Their package is so much better than having Road Runner. I would save a lot of money if I could get DSL. I would want 3/512 or maybe 2/512. I wouldn't want DSL at 768/128. But I would go down from 5/1 on Road Runner to 3/512 on DSL because it would save a lot of money but HawTelcom is not going to extend DSL to this area. If I ever get a TV again and want HD channels then having RR also would provide a better package deal but as it is now, I pay for Standard Plus TW Analog TV as part of the rent (bulk rate for this building) and then pay separately for RR. So, I see no benefit of packages thus HawTel DSL package would be a good savings...but I can't get it.
I agree that the OP's problem is more likely something going on with that Dell computer not the modem.
--
"The same ferocity that our founders devoted to protect the freedom and independence of the press is now appropriate for our defense of the freedom of the internet. The stakes are the same: the survival of our Republic". Al Gore, The Assault on Reason | |
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MacLeech
The one and only
Premium
join:2001-07-14
SoCal
| Re: [TWC] Can only connect throught router - not through modem said by Mele20 :It is possible, of course, that this is changing and I have not inquired about any possible progress in backup for VoIP in quite awhile That is the most intelligent thing you said in the entire post and you should have left it at that. | |
| | | | | | | | | | | | | | Mele20
Premium
join:2001-06-05
Hilo, HI
| said by MacLeech :said by Mele20 :It is possible, of course, that this is changing and I have not inquired about any possible progress in backup for VoIP in quite awhile That is the most intelligent thing you said in the entire post and you should have left it at that. Considering that Oceanic told the PUC they would NEVER backup, I can't see how what I said is so much more intelligent than what else I said. If they are deciding now to backup, then they sure look stupid...saying they never would. I do know that they plaster all over everywhere now that their service is not to be used as the primary service because there is no 911 if RR is down or the electricity is off, or the modem dies, etc. They used to hide that extremely important fact until HawTel called them on it and some subscribers almost died because they were stupid enough to get VoIP instead keeping their landlines. They do though advertise that their VoIP is just like cell phone usage in that cell phones also will not work when the electricity is off. Well, DUH...how does that make either one safe? They are both services that one should have ONLY in ADDITION to a landline.
They are not carrier class so they do not have to be 99.8% reliable 365 days a year. They can have as many outages as they want, and take as long as they want to repair the lines, and up the charges anytime they wish for as much as they wish. There is no comparison between VoIP and a landline. A landline is so superior in every way, even if you live where there is battery backup, that it makes no sense to get VoIP. Oceanic offers no Lifeline service either.
Everyone in Hawaii with a landline just a got a free phone from HawTel. It is a corded phone so now even those who use cordless phones have 911 protection if the power is out. I use a corded speaker phone but I am very glad to have a second corded phone. Cordless phones are junk.
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"The same ferocity that our founders devoted to protect the freedom and independence of the press is now appropriate for our defense of the freedom of the internet. The stakes are the same: the survival of our Republic". Al Gore, The Assault on Reason | |
| | | techman85
join:2008-09-25
62210 | You don't have to take the battery, MacLeech is right, resetting the modem through a reset button at the back would do. If you're getting a valid try to ping a URL or an IP | |
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rra
Advice
join:2008-09-19
Kingsville, MO
| Re: [TWC] Can only connect throught router - not through modem As long as there is a reset button yes. MY directions will apply to any voip modem though.
Kinda like unplug the power to your cable box and plug it back in. This is a universally capable method.
Beleive me there are eMTAs with no reset button. | |
| | | | | techman85
join:2008-09-25
62210
| Re: [TWC] Can only connect throught router - not through modem said by rra :As long as there is a reset button yes. MY directions will apply to any voip modem though. Kinda like unplug the power to your cable box and plug it back in. This is a universally capable method. Beleive me there are eMTAs with no reset button. yeah right..some emtas don't have reset button..sorry bout that | |
| scavenger84
join:2008-10-06
6000 | have you tried flushing the dns of that computer?
you can flush the dns by going to the command promt and typing this:
ipconfig /flushdns
and after that, type this command
ipconfig /registerdns | |
| Selenia
join:2006-09-22
Pittsfield, MA
 ·Verizon Online DSL
 ·RoadRunner Cable
| Go to your network connection, right click and select "properties. Select "TCP/IP" and click properties again. Make sure no default gateway is showing on the connection. Click advanced and look for your list of default gateways. If there are any, then clear them and reboot. I think this could be a default gateway issue as his pc obtains an RR IP, the dns servers, but yet, can't ping outside his LAN. You might have the default gateway hardcoded, which may be the correct one for the router. The default gateway on the WAN side(which you are now connecting directly to) would be different. | |
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