I remember that they did have a module that could run an own-developed script (probably written by a junior developer on spare time and by accident picked up by management).

They had a workshop and demonstrated it, doing a knight-rider with 8 or 10 LED. I think it did one or two passes/second so I asked how much they had slowed down the output speed. It wasn't! Obviously not a candidate for embedding real logic :)

The speed issue was to a large part that they didn't run byte-codes or native code. Every function and operator was stored and evaluated as full-text strings.

Wavecom on the other hand allows download of native 32-bit ARM code, which makes the applications lightning-fast as long as they are not speed-limited by any RTL calls or AT commands.