Does one exist?
AT&T with managed service provides 4 border element addresses. No Security is required since they own the router and install it at your location(assumption is you physically secure it).
Group A - Enhanced Features
Address#1 is SIP Border Control Address(AT&T address)
Address#2 is SIP Optional Message Address(AT&T address)
Address#3 is Public Media Address(AT&T's onsite Managed service router's LAN)
Address#4 is Public Signaling Address(3CX WAN)
What is the proper method to setting up a trunk with an AT&T IP Flexible Reach SIP service?
AT&T with managed service provides 4 border element addresses. No Security is required since they own the router and install it at your location(assumption is you physically secure it).
Group A - Enhanced Features
Address#1 is SIP Border Control Address(AT&T address)
Address#2 is SIP Optional Message Address(AT&T address)
Address#3 is Public Media Address(AT&T's onsite Managed service router's LAN)
Address#4 is Public Signaling Address(3CX WAN)
What is the proper method to setting up a trunk with an AT&T IP Flexible Reach SIP service?
