Media bypass vs Media Proxy
Media Bypass: takes place when the carrier establishes the call but removes itself from the media pathway
Media Proxy: the opposite of media bypass, the carrier remains in the media path for the duration of the call
NAT: Network Address Translation (the majority of NAT's map multiple private hosts to one publicly exposed IP address)
Media bypass happens when you send audio directly to the end user over the public network and your carrier has no control to improve the audio when it is sent. Depending on the amount of traffic on the public internet, you can expect delays once your audio has left your local network.
To take advantage of media proxy, make sure that calls are long distance. Here at Telnyx, we have our own private network. We take your calls off the public internet and use our backbone (like a private highway), avoiding the public internet for the majority of the call path. The greater the network, the less time you spend on the public internet highway and the greater potential quality of the call!
There is one disadvantage to this. If you are calling an end user who is nearby, it would be better to use media bypass and call them directly. This is only in cases where the carrier is further away from the call originator than the receiving end. Thus, it would be quicker to send the audio directly to the call recipient than to send it through Telnyx.
However, another advantage of using media proxy is if either or both end users are behind a NAT. Having a carrier in the middle, like Telnyx, can ensure that the audio channels don't fail because of NAT's being used. We have NAT traversal mechanisms that ensure no issues with the call.
Using our private fiber network to leverage your calls, our mission control portal has several features that allow you to decide which way you want media to be handled. Telnyx makes it a priority to take your call traffic off the public internet for as long as possible to ensure that there are no delays, poor voice quality or dropped calls.