SBC B1 Public Interface IP

[RedTech443]

I am trying to determine the correct IP address to assign a B1 Public interface on a SBC.

The setup is as follows

M1 = 10.1.30.90
A1 = Private side 10.1.30.91
B1 = 192.168.168.10 Public side of B1 = ???

I have a DMZ IP address assigned to the interface B1 of 192.168.168.10 however I am not sure what the Public IP should be set to.

I have an outside public IP address of (an example 123.45.1.252) but since I have a cable modem that has its own DHCP server for TV services in the house and it is between my firewall and the outside network my internal network sees my outside IP address that of which the cable modem is assigning my firewall which is 192.168.0.246. On the cable modem itself I have natting and all that disabled but I was unable to disable its internal DHCP server as the TV's need it for IP addresses.

My question is, should my B1 public IP address be my real outside IP or should it be 192.168.0.246 of what my network thinks is the outside IP?

OR should I leave it blank, it seems to have some interesting results on the traces with logging agents in.

 

[kyle555]

Should be the public IP. And if you can port forward 5060 and some media port ranges to the SBC and mirror that on the SBC, that's what'll tell the internet side so send to the public IP/port on the c= line and m=line of the SDP that goes outside.

 

[RedTech443]

Ah yes thank you I forgot about the media port ranges, I think if I remember correctly my firewall has issues with RTP stuff. I have made a new fresh install for CM 6.3, ASM 6.3 and SBC 6.3 and going to attempt a clean install with 1 sip trunk and 1 remote worker using android.

Hopefully this guide is the one that works.

https://downloads.avaya.com/css/P8/documents/100183254