What type of trunk would you create to connect to an AudioCodes Mediant gateway?

In Genesys Cloud, an External Trunk is the specific configuration object used to establish a SIP connection to an external entity. An AudioCodes Mediant gateway functions as a Session Border Controller (SBC) or media gateway, which is considered an external SIP device from the perspective of the Genesys Cloud platform. This trunk type is designed precisely for interoperability with third-party gateways, SBCs, and SIP carriers to route calls between Genesys Cloud and the external system (e.g., the PSTN or a legacy PBX).

B. Network interface trunk: This is not a valid trunk type in Genesys Cloud. Network interfaces are configured on Edge appliances for network connectivity, but the logical SIP connection is defined as a trunk.
C. WebRTC phone trunk: This trunk type is used exclusively for managing connections from Genesys Cloud's native WebRTC softphones and is not intended for gateway or carrier interconnection.
D. SIP phone trunk: This is used to connect and manage generic third-party SIP phones directly with Genesys Cloud, not for establishing a connection to a gateway or SBC.

1. Genesys Cloud Resource Center, "About trunks": This document outlines the different trunk types available in Genesys Cloud. It explicitly states, "External trunks are for connections to a SIP carrier, a gateway, a session border controller (SBC), or another PBX." This directly confirms that an external trunk is the correct choice for an AudioCodes gateway.

2. Genesys Cloud Resource Center, "Create an external trunk": The introductory paragraph of this guide specifies the use case: "To create an external trunk, you must first add a new external trunk and then configure it for use with a SIP carrier, a gateway, a session border controller (SBC), or another PBX." This reinforces the purpose of the external trunk.

3. Genesys Cloud Resource Center, "Trunk configuration settings": In the section detailing External Trunk settings, the documentation describes parameters like "Outbound SIP Servers or Gateways," which are necessary for defining the connection to devices like the AudioCodes Mediant gateway.