Use a packet sniffer tool, for example.
Or read the source code of IB.

C.

> -----Original Message-----
> From: ing. Th. Kuperus [mailto:thijs@...]
> Sent: Viernes 26 de Enero de 2001 19:50
>
> Is there a way to check this? Not that I really have an option, coz I
> noticed Blob's are close to useless over an ISDN connection, so I have to
> use the VARCHAR anyway...