The new technologies have increasingly provided access to foreign languages and cultures and also to authentic communication. If we consider that the foreign languages teaching/learning process and teachers’ education can be enriched by telecollaboration, I believe it is necessary to observe the roles played by language teachers. Based on an ethnographic qualitative study carried out with Brazilian and foreign university students, this paper focuses on teletandem practice, a distance tandem modality carried out by audio and video conferences with resources such as Windows Live Messenger, Skype or ooVoo, to investigate roles played by language teachers in telecollaborative practice. The data were collected from (a) e-mails exchanged between the partners and between partners and the mediator-teacher; (b) DVDs of interaction sessions recordings; (c) written teletandem sessions recordings; (d) recordings of interviews between the partners and the researcher at ooVoo; (e) field notes taken at Teletandem Laboratory at UNESP- Assis; and (f) participants’ written reports. The data analysis, from the hermeneutic interpretative perspective, revealed that the teacher is not ignored but is given new roles to maximize the process towards meaningful and intercultural learning.