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Forum Discussion
Trouble using SRXN3205 behind U-Verse modem
To summarize, I have a small business network with a Netgear SRXN3205 router and a Netgear Smart Switch (GS716T) sitting behind the newly installed U-Verse modem/router NVG510. I have 4 computers, 4 printers and 3 hosted VOIP phones on the network. Everything ran well prior to this on an AT&T DSL modem in bridge mode, except I could not get adequate upload speed for the IP phones, even with load balancing on the Netgear router. So I decided to move to U-verse ASDSL2+ a couple of weeks ago, and was introduced to the AT&T NVG510 modem, which has bridge mode .
I have had no luck thus far in getting everything working if I use the Netgear router behind the NVG510. I first tried to configure the modem using a pass-through configuration, but I could not get the phones to work. As an experiment, I bypassed the Netgear router and used the NVG510 as the network router, and the phones work. However, that forfeits all of the advanced features of the Netgear router, including the advanced firewall, the VPN and the QOS features.
Last Thursday, a very good technician from AT&T spent over three hours in my office trying to get everything configured through the Netgear router. Instead of using the pass-through configuration, he assigned a static IP that I obtained to the Netgear router, and everything worked but the phones. He could not figure out how to get my VoIP phones to work, and suggested that I contact the hosted IP phone provider for assistance.
On Friday, I spent over two hours with my hosted IP phone provider support department, and a very qualified technician there remoted into my system. He was very knowledgeable and was able to quickly telnet into the NVG510 and enable the sip feature, thinking that might be what was blocking the phones. After that did not cure the problem, he removed the fixed IP configuration on the router, and could get the phones working if plugged directly into the AT&T modem, but not if plugged into the Netgear router. After two hours of effort, he concluded that the AT&T technician must have done something to my router that was preventing the phones from connecting with the Internet. I do not believe that to be the case, but I am certainly no expert when it comes to routers or networking. Again, everything worked perfectly before I switched to U-verse.
My questions concern whether anyone else has had luck configuring a Netgear router behind the NVG510, and successfully using VoIP phones with it. I also wonder if anyone has any suggestions as to what might be the cause of my router blocking the phones from connecting to the Internet through the NVG510. Any suggestions on proper configuration of the AT&T modem beyond what I have found through Internet searches would be greatly appreciated. It seems that AT&T should provide more guidance on these issues, since a bridge mode is not available for this modem.
Would it help to assign the other static IPs to the phones? One other less-desired option might be to keep the static IP on the router and run everything through it except the phones, which I plug directly into LAN ports of the NVG510, but I am not sure that this is possible. Any guidance for this noob would be greatly appreciated!
I have had no luck thus far in getting everything working if I use the Netgear router behind the NVG510. I first tried to configure the modem using a pass-through configuration, but I could not get the phones to work. As an experiment, I bypassed the Netgear router and used the NVG510 as the network router, and the phones work. However, that forfeits all of the advanced features of the Netgear router, including the advanced firewall, the VPN and the QOS features.
Last Thursday, a very good technician from AT&T spent over three hours in my office trying to get everything configured through the Netgear router. Instead of using the pass-through configuration, he assigned a static IP that I obtained to the Netgear router, and everything worked but the phones. He could not figure out how to get my VoIP phones to work, and suggested that I contact the hosted IP phone provider for assistance.
On Friday, I spent over two hours with my hosted IP phone provider support department, and a very qualified technician there remoted into my system. He was very knowledgeable and was able to quickly telnet into the NVG510 and enable the sip feature, thinking that might be what was blocking the phones. After that did not cure the problem, he removed the fixed IP configuration on the router, and could get the phones working if plugged directly into the AT&T modem, but not if plugged into the Netgear router. After two hours of effort, he concluded that the AT&T technician must have done something to my router that was preventing the phones from connecting with the Internet. I do not believe that to be the case, but I am certainly no expert when it comes to routers or networking. Again, everything worked perfectly before I switched to U-verse.
My questions concern whether anyone else has had luck configuring a Netgear router behind the NVG510, and successfully using VoIP phones with it. I also wonder if anyone has any suggestions as to what might be the cause of my router blocking the phones from connecting to the Internet through the NVG510. Any suggestions on proper configuration of the AT&T modem beyond what I have found through Internet searches would be greatly appreciated. It seems that AT&T should provide more guidance on these issues, since a bridge mode is not available for this modem.
Would it help to assign the other static IPs to the phones? One other less-desired option might be to keep the static IP on the router and run everything through it except the phones, which I plug directly into LAN ports of the NVG510, but I am not sure that this is possible. Any guidance for this noob would be greatly appreciated!
4 Replies
- If new modem is in bridge mode I don't see why it would not work
- The only U-Verse modem is the miserable Motorola NVG510 that AT&T locks down and is not capable of a true bridge mode.
- You probably need to have different account / separate account do DSL tjat you use for srxn with bridge mode capable account
- To update: I spent about 7 hours with techs from my hosted IP provider and AT&T trying to resolve this problem, without success. In the end, I wound up rooting and hacking my AT&T NVG510 modem so that I could use it in bridge mode, and that resolved all of my issues. It is a shame that AT&T does not allow you to do that out of the box, as there is no way that their modem is suitable for business use without that bridge mode capability. Now I can finally take full advantage of the fine SRXN3205 router.:)
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