Anusha,
Were you using the Bangalore data center? you really need the 4core 8GB droplet at a minimum.
Its not as good as a bare metal implemention, but you can definitely use this for small meetings with no issues at all.
you need less than <100kb to listen to the conference, video and deskshare will be the items causing low bandwidth users issues. The presentation/whiteboard should work flawlessly.
Also, make sure you installed havaged on your server, that can cause issues if not.
regards,
Stephen
hostbbb.com