I got the aliases to finally work. The trick for me was that you MUST put a line : location("aliases"); Somewhere in your configuration file *before* you can add aliases with serctl. That's because serctl uses the fifo control file which is connected to the running ser process. If the running ser process doesn't have a request for aliases, it doesn't make the ability to set one. I recognize the first error you were getting. The error text doesn't really make sense, it isn't the table that is missing, rather the concept of a 'domain' space that hasn't been referenced. As far as your error, I didn't see it in the code, I grep for 'expected' and find: usrloc/ul_fifo.c: "400 ul_add: aor name expected\n"); usrloc/ul_fifo.c: LOG(L_ERR, "ERROR: ul_add: aor expected\n"); usrloc/ul_fifo.c: "400 ul_add: contact expected\n"); usrloc/ul_fifo.c: LOG(L_ERR, "ERROR: ul_add: contact expected\n"); usrloc/ul_fifo.c: "400 ul_add: expires expected\n"); usrloc/ul_fifo.c: LOG(L_ERR, "ERROR: ul_add: expires expected\n"); usrloc/ul_fifo.c: "400 ul_add: q expected\n"); usrloc/ul_fifo.c: LOG(L_ERR, "ERROR: ul_add: q expected\n"); Each of these error messages is produced when the data was not presented on the pipe. Kinda sounds like a mismatch in serctl and the ser program? I'm looking in the 0.8.10 code base. ---greg Greg Fausak