RT Journal Article T1 On the orbit characteristics of the M/G/1 retrial queue A1 Artalejo Rodríguez, Jesús Manuel A1 Falin, Guennadi I. AB In teletraffic applications of retrial queues only the service zone is observable. Another part of a retrial queue, the orbit, which represents the delay before repeated attempts to get service, cannot be observed. Thus, it is very important to get general results about behavior of the orbit. We investigate two characteristics of the orbit, namely, the orbit busy period and the orbit idle period, which seem to be very useful from this point of view. PB John Wiley & Sons Inc SN 0894-069X YR 1996 FD 1996-12 LK https://hdl.handle.net/20.500.14352/57486 UL https://hdl.handle.net/20.500.14352/57486 LA spa NO The first author acknowledges support from University Complutense of Madrid through Grant No. PR161/93-4777. We also thank the referees for their comments, which helpedus to improve the clarity of the article. NO University Complutense of Madrid DS Docta Complutense RD 9 may 2025