login shell

hello

i embedded inetd on my pc card

and telnetd work fine

but when i log more than twice i m disconnected

it is the same if i make a login on the console:

for example on the console i type
1/ login root , + passwwd and i m logged
2/ than i type login user + passwd and i m logged
3/ when i type login user2 + passwd and there is no more keyboard , i
think no more shell


i don t undeerstand because on the doc i read that after
a login threre is automatically a nex shell ???

thanks

cyrille