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Answers and rating deltas for
What protocol(s) is used to deliver VOIP to phones
| Author | Votes | Δ |
|---|---|---|
| Istvan | 1 | 0.00 |
Last visited: Jun 2, 2016, 2:19:24 PM
| Author | Votes | Δ |
|---|---|---|
| Istvan | 1 | 0.00 |