Quote Originally Posted by babaganoosh View Post
If it does not recognize as complete it'll wait for a while and then send it anyway, which explains the long pause.

is there a way to teach the grandstream that if I dial 123, there's nothing else after it? can I do that? Or can Voipo? Should voipo techs know this? I have 5+ emails from them over the last couple weeks about this, with them trying things behind the scenes.
It should be (I'm not a techie) in the dial plan of the device. If it's not, adding it to the dial plan should "teach" it.