The carrier you are referring to hides the topology from you. SIP telephony is no different than landline other than the Internet is the. transport.
The network is cooperative and made up of many different peering points. In a major market like Toronto there could be 100’s of media gateways. What number you dial, time of day, load and least cost routing all factor into the routing decision.
If you want to see how this works look at your RTP streams when a call is up to see thr location your media is anchored to.
Certainly we want you to have a positive experience with our trunking product. We only peer with top quality carriers.
Certainly we can help you understand SIP trunking in a forum however I think the constructive dialog is to see what can be done to improve your call quality.
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