Abstract: A bridge for multi-network communications is provided. A voice bridge includes an open settlement protocol (OSP) compliant interface for establishing inter-domain voice connections. The voice bridge facilitates connections between OSP compliant and non-OSP compliant networks and interfaces with an OSP server. A call set-up component processes requests from OSP compliant and non-OSP compliant networks. An OSP interface facilitates OSP compliant reporting to the OSP server. Other embodiments comprising additional features, such as address masking, are also provided.