why inittab respawing too fast and disabled

[C.Jagadish]

Dear Sir,
      I have configured my machine for dial-in. 

I have added the following line to /etc/inittab

d2:respawn:12345:/sbin/agetty -i 'ATQE0Q1S0=1' -mt60 38400 ttyS1 vt100

and I did a "init q". It started giving message "d2: respawning too fast
disabled for 5 minutes". 

 Can any one help me in correcting this problem ?

Regards
C.Jagadish