Hi all, I wrote a perl script to register many sip uri in one time using the FIFO of SER and the ul_add method. I'd like to know if there's other concurrent process than my script writing to the FIFO (for example SER itself for registration?)and is there a way to protect the fifo to be sure that the information sent to the FIFO will be parsed correctly (ie prevent information to be interlaced in the fifo). Thanks very much, Rodrigue