In this paper results are given concerning the equilibrium behaviour of the M/G/k group-arrival loss system. Such a system has k servers whose customers arrive in accordance with a compound Poisson process and operates as follows. Whenever an arriving group of size j finds n servers busy, then a number min(j,k-n) of its members are accepted for service while the remaining customers leave and do not return later, that is, are lost to the system. The service times of the accepted members may be dependent random variables. In the first part of the paper explicit results are obtained for a particular case concerning the service time distributions. In the second part some results are given for the general model and these are applied to the two-server case.
