Quote Originally Posted by ymhee_bcex View Post
Well, your first paragraph contradicts the second one... if it's "as simple as the model/firmware of the router the two people use" then it would be similar experience for both VoIP providers.
Not sure how this is contradictory? I'm saying the reason one person can have an issue and another not could be as simple as them both having diff router firmwares.

Like I said all VoIP providers have completely different networks so a different router firmware could work well with one VoIP provider and not another. All providers would interact with a different firmware differently since their networks aren't similar.