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[Other] U-Verse won't work with VOIP

Make sure to disable "SIP Application Layer Gateway" on the 2-wire under Advanced->Configure Services.

Some 2-wire modem models have the above mentioned "SIP Application Layer Gateway" option. I'm not sure which models do, so if the 3600 doesn't, then my suggestion above doesn't apply. He may try setting it in bridged mode, with another router inbetween, if necessary, to do the PPPoE authentication.

Thanks for the quick replies.

I also cannot find the SIP ALG option. I've looked for a way to set it in bridge mode and haven't found one. I read somewhere on the internet that the 3600 doesn't have a bridge option, but don't know if that's accurate.

reply to sumpteretc
If you have a router (other than the 2Wire and the SignalSys), try using it to "launder" the connection: SignalSys WAN port connected to a LAN port on extra router; WAN port of extra router (set for DHCP) to a LAN port on 2Wire.

Alternatively, connect a PC to the 2Wire via Wi-Fi and set up Internet Connection Sharing to share the connection to the Ethernet interface, then connect the SignalSys WAN port to the PC's Ethernet port.

If you have the SIP credentials for Lightyear, try shutting down the SignalSys and using a softphone to connect.

If you have admin access to the SignalSys and enough information to restore after any changes, you might see whether you have the problem, when the SignalSys is configured for another VoIP provider (if you don't have one, try a free Callcentric account).

reply to sumpteretc

"Not connecting" isn't accurate or at least not specific enough. It is connecting, as in getting an ip address. I can pick up the phone and get a dial tone. However, when I dial the number, the 2wire shuts down the internet connection.

When I set the VOIP to DMZplus, there is no difference.

[BQUOTE=sumpteretc However, when I dial the number, the 2wire shuts down the internet connection. [/BQUOTEWhat happens on incoming?

Also, please answer what you can from my previous post, i.e. can you connect to Lightyear with a different device? Connect to a different provider with your SignalSys? Connect the SignalSys to the 2Wire via some indirect means?

Most of the time incoming calls don't make it to the phone. Lightyear has a voicemail system, so we get an email telling us we have a voice mail. A couple of times the phone has rang, but as soon as we answer the dsl modem shuts down the internet connection.

As for the other things, we were connected to lightyear at my in-laws' place using their cable modem until two weeks ago. This problem only started when we plugged into the U-Verse modem. We don't have an extra router around the house so I haven't had a chance to try putting another router between the modem and the VOIP.

I don't know how to connect to another provider. Could you give some more specific information about how to do that?

reply to sumpteretc
Do you have any DSL filters? Try connecting one to the phone port on the ATA device, and then plugging the phone into the filter. I don't know if it will help, but I used that method to fix a Vonage setup over regular DSL that was showing the same symptoms. Every time they tried to answer or place a call, the DSL modem would lose sync. As soon as they hung up the phone, it would re-connect.

reply to sumpteretc

OK, finally borrowed a router for troubleshooting, and finally got it to work. I'm using a linksys router between the 2wire and the signalsys. Takes awhile to dial, but gets it done and makes the call without getting kicked off the internet. Thanks for the help!