SHOW:
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| 1 | - | MF tones preceding "number out of service" message |
| 1 | + | MF tones preceding "number out of service" message from 202 number: |
| 2 | http://dialer.otp22.com/2012-09-17%2023-00%20UTC%20-%20202-999-3335%20-%2099286.wav | |
| 3 | ||
| 4 | *SAME* tones (including noise bursts) now heard 419 phone number | |
| 5 | this is a recording being played back to us | |
| 6 | ||
| 7 | tone 1: 1100 and 1699 Hz approx 100 ms | |
| 8 | tone 2: 700 and 899 Hz approx 70 ms | |
| 9 | tone 3: 1100 and 1301 Hz approx 70 ms | |
| 10 | tone 4: 1100 and 1301 Hz approx 70 ms | |
| 11 | - | SS7 decode (http://en.wikipedia.org/wiki/Signaling_System_No._5) |
| 11 | + | |
| 12 | tone 6: 1301 and 1504 Hz approx 70 ms | |
| 13 | tone 7: 1301 and 1504 Hz approx 70 ms | |
| 14 | ||
| 15 | SS5 decode (http://en.wikipedia.org/wiki/Signaling_System_No._5) | |
| 16 | ||
| 17 | tone 1: C&F 13/code 13 keying prefix 1 | |
| 18 | tone 2: A&B 1 | |
| 19 | tone 3: C&D 6 | |
| 20 | tone 4: C&D 6 | |
| 21 | tone 5: D&E 0 | |
| 22 | tone 6: D&E 0 | |
| 23 | tone 7: D&E 0 | |
| 24 | tone 8: E&F 15/code 15 keying finish |
