Desperate to get SIP running on a SV9100 system 1

[noahg350]

Hello all,

I am working on a SV9100 install and getting severally roadblocked by my network and SIP registration failing. Between ATT, NEC and Nuso the carrier, nothing is obvious. I have verified that ports are open, the firewall is open ect.

I have 8 analog line cards and a single CP20, no netlink or other complexities. I am thinking the system is pointing at the wrong trunk group somehow, could someone help me troubleshoot please? Iv been at this for a few days and for a lack of better words, I am desperate.

After a packet capture during an attempted call, it looks like the DNS is not reaching its destination if I am saying the right.

DB attached.

Thank you

-Noah

 

[noahg350]

Can you be a little more specific of what to look for on the wireshark? Do I want to see outgoing or incoming packets from the IPL?
I am getting a lot of "who is .....241"

http://192.168.1.241

is out IPL voip card.

 

[noahg350]

Here is a call I picked up

 

[CoralTech]

Ya, I'm seeing absolutely nothing on that capture. You do realize you can capture that right on the NEC right? Turn off all the filters. Have you ever done this before or are you trying to google/tek forum this?

 

[noahg350]

Hi again,

No I have done this before but the ATT service at this site is being tricky. I have attached a Pcap from the internal pcap while I was turning the trunk on and off with 10-36.

Thank you
-Noah

 

[noahg350]

I believe this is what is happening:

https://www.dnsleaktest.com/what-is-transparent-dns-proxy.html

Not a lot I can do at the moment.

 

[CoralTech]

I see 5080 and 5081. Are you using an NEC SIP phone?

 

[noahg350]

Yes I am

 

[noahg350]

Hi Coral,

My 10's of hours into the ATT void seemed to have paid off. I was packing up this morning to go home empty handed and decided to check the system a final time. SIP was registered! The ATT changes must have taken effect overnight. They turned off "DND error assist" and everything worked perfectly for audio, inbound and outbound calls.

DNS error assist is not a router setting, it is a setting found on your ATT portal where you pay your bill under "security choices".

Thank you for your help and feel free to pass people my way who are experiencing this DNS issue.

Thank you again.

-Noah