SMS push methods

[Rafael 'Dido' Sevilla]

I'm trying to use Kannel to manage connections to a CIMD2-based SMSC,
and am just wondering if there is any other way to send SMS messages
apart from using the HTTP interface.  If there are none, has anyone
seriously benchmarked the use of this interface for sending large
volumes of messages?  We are interested in pushing thousands of
messages, and we wouldn't want to have a script that takes days to send
all these messages out.