Hello, wondering if someone can help. feel free to move the post to a better location. this is the only location i could connect to that seemed relavent.
moved into an AT&T u-verse neighborhood this past August. Brand new home with Fiber connection right to the side of the house. The internet connection seems good, but i am still having some issues.
From time to time I try to work from home. My office has a VoIP system, so of course the first thing i tried to do was connect my desk phone to my home network. while the phone did connect, and the display came on and told me the status of every phone in my office, initial testing showed that my side of the conversation was not going through. i learned this by calling into the voice mail system and trying to leave myself a message. i could hear the VM system just fine, but the system could not hear me. this was also confirmed when i tried to call my cell phone.
so i logged into my home network switch, figured out which LAN IP my phone was using and reconfigured that connection to the DMZ+ system.
that didnt help either
the only thing i was able to get to work at the time was a 3rd party SIP app on my AT&T Wireless Samsung Note 3 via WiFi. but initially that didnt work. i couldnt get that to work with the public IP at my office. i finally had to use an SSL VPN app to connect to my network, then use the SIP app, and the internal LAN IP of my phone system.
but since the kitkat upgrade that no longer works either.
it appears that the standard SIP ports, UDP 5060-5061 and possibly UDP 5070 are either being blocked or something, and are not allowing standard SIP traffic to go through. when i connect to a public hotspot, via WiFi, this SSL VPN connection works fine.
I have tried contacting AT&T wireless about the cellular connection problem, They say it is a Samsung problem, and that Samsung might be blocking the ports
Samsung says they dont have the ability to block the ports, and that i need to reset my cell to factory defaults to get it to work (that is their solution to everything)
i also tried to contact u-verse tech support, and they say i need to pay to call Connectech to get help.
This seems pretty straight forward to me. i have done some online research on this and there only seem to be 2 possible answers. 1) the SIP ports are being blocked, and i am not given access in my home router to unblock them, or 2) the SIP-ALG feature, which cannot be de-activated by the consumer is re-writting SIP traffic so my home phone line works better with AT&T service.
if its option 2... i dont really use my home phone line. i only got a home phone line for my alarm system, and the alarm system is not even compatible since it is a digital phone line. i am happy to get rid of the line.
if its option 1, how do we get it unblocked. i only use a SIP phone once in a while. it does not eat up a lot of bandwith.
any help our guidance would be apprecaited on this one. i have tried everything i can think of, but i dont really want to spend money on tech support for something that idealy AT&T regular support should be aware of and able to troubleshoot.