Problems working remotly with very slow and unstable connections.

Hi,

My company has a branch office in Angola,which is a country with lots of limitations in the communications.

We are currently using RD, VNC and Logmein to try give remote assistance as faster and eficient as we can, but we are experiencing since 2 years very bad results.

We would like them there worked in our main location using Terminal services for example but it simples doesn’t work due to the very unstable and slow connection in angola.

Does anyone knows a better technology, program that is recommended to used in these kind of environments with unstable and slow connections?

Any help or experience share will be much appreciated,
Best regards,
Teixeira