accepting empty sms on CIMD

[alvn]

how can i set kannel to accept an EMPTY sms from a CIMD type smsc? its not 
written in the docs, so i hope someone can help me here. thanks.

here's a line from the log that says the message is ignored:
"INFO: CIMD2: Got empty SMS, ignoring."
thanks.

--
Alvin Gamboa
Software Engr.
Infophil Inc.
GnuPG Key ID 0xE4C03EBD