Ok, just got a Integrated T1 line (Voice and Data) installed with an Adtran 3200 Router. The Telco company configured the router for nat and everything is working great. With the service I have 5 public ip addresses. I would now like to use one of the public IP addresses included in my block. Currently, when I check to see what public IP address all the nat clients are running out of it is the one the telco company calls the Customer Serial IP Address. Here is the setup
WAN Default Gateway - *.151.101.57
Customer Serial IP - *151.101.58
Subnet Mask - 255.255.255.252
Public Lan Network - *153.125.200
Usable IP's - *153.125.201-206
Subnet Mask - 255.255.255.248
NAT Clients for Internet Access - Default Gateway 192.168.1.1
How can I access one of the public IP addresses? I plan on puting a router behind it and running nat for a separate network. Should I disable NAT on the T1 Router?
Site Note Questions:
Why did the telco company choose to run nat behind the customer serial ip address and not a public lan address?
What is the purpose of the Serial IP addresses, why can't you interface the Default Public Lan Gateway directly to the Telcos Router and eliminate the Serial IP Addresses (If this doesn't make any sense just say so)?
Also, We have a PBX running with this configuration and I don't want to disrupt its service:
Avaya IPOffice 403 PBX - 192.168.42.2
Computer To Configure PBX - 192.168.42.1
Thanks in advance.