On the Avaya Session Border Controller for Enterprise (ASBCE), to connect one Internet Friendly (Edge)...

To connect one Internet Friendly (Edge) Gateway to Avaya Communication Manager (CM), you need two Public and two Private IP addresses. An Internet Friendly (Edge) Gateway is a device that provides secure and reliable connectivity between endpoints on different networks, such as the public internet and a private enterprise network. An Internet Friendly (Edge) Gateway can be implemented using an Avaya Session Border Controller for Enterprise (ASBCE) in distributed mode, where the ASBCE consists of two components: a Signaling Border Element (SBE) and a Data Border Element (DBE). The SBE handles SIP signaling and call control, while the DBE handles media packets and signaling pinholes. To connect one Internet Friendly (Edge) Gateway to CM, you need these IP addresses:

A Public IP address for the SBE: This is the IP address that is visible to external entities, such as endpoints or servers on the public internet. This IP address is used by external entities to communicate with the SBE using SIP over TLS.

A Private IP address for the SBE: This is the IP address that is visible to internal entities, such as CM or other ASBCE components on the private enterprise network. This IP address is used by internal entities to communicate with the SBE using SIP over TCP or UDP.

A Public IP address for the DBE: This is the IP address that is visible to external entities, such as endpoints or servers on the public internet. This IP address is used by external entities to communicate with the DBE using RTP or RTCP.

A Private IP address for the DBE: This is the IP address that is visible to internal entities, such as CM or other ASBCE components on the private enterprise network. This IP address is used by internal entities to communicate with the DBE using H.248.