Talk: why freeze terminal?

On Solaris 10 I connect via ssh From one user I did talk marian and appear [Waiting for your party to respond] On other side (user marian, on same machine) talk: connection requested by pippo@solaris10.verde.priv. talk: respond with: talk pippo@solaris10.verde.priv I did (as marian user) talk pippo@solaris10.verde.priv Return to pippo on his terminal appear talk: connection requested by LOGIN@solaris10.verde.priv. talk: respond with: talk LOGIN@solaris10.verde.priv but screen is freeze What I miss? I have tried pts and ttys (/dev/term/a and /dev/term/b)