This paper reports on an experimental study investigating alternative communication modes to English as a Lingua Franca. The purpose was to examine the effectiveness of different modes of communication and to gain insight in communication strategies used by interlocutors to solve referential conflicts. Findings show that ELF may not necessarily be the most effective mode of communication for speakers who do not share a native language. In the context of multinational corporations, RM may be regarded as a viable alternative to English for negotiating mutual understanding, particularly for speakers with (linguistically) closely related mother tongues.