MF R1 Frequencies and corresponding digit definitions Software License D2 Technologies, Inc. and Maintenance Agreement August 4, 1997 CONFIDENTIAL 38 - ----------------------------------------------------------------------- F1 (Hz) F2 (Hz) 1500 1620 1740 1860 1980 ------------------------------------------------------------- 1380 1 2 4 7 11 1500 -- 3 5 8 12 1620 -- -- 6 9 13 1740 -- -- -- 10 14 1860 -- -- -- -- 15 - ----------------------------------------------------------------------- Table A-11: Nominal MF R2 Forward Frequencies and corresponding combination numbers - ----------------------------------------------------------------------- F1 (Hz) F2 (Hz) 1020 900 780 660 540 ------------------------------------------------------------- 1140 1 2 4 7 11 1020 -- 3 5 8 12 900 -- -- 6 9 13 780 -- -- -- 10 14 660 -- -- -- -- 15 - ----------------------------------------------------------------------- Table A-12: Nominal MF R2 Backward Frequencies and corresponding combination numbers 1. Be configurable to detect either R1, R2 forward, or R2 backward MF digits on a per-call basis. 2. Detect the presence of all 15 R1, 15 R2 Forward, and 15 R2 Backward digits under a broad range of network conditions. 3. MF digit information is provided as soon as the minimum duration is met. This information is called leading edge detection. This allows the earliest possible response to the digit, such as in compelled signaling. 4. The trailing edge of a MF digit must be detected. This allows the system to delay any response (such as in compelled signaling) to the digit until it is removed. The criteria selected for trailing edge detection will debounce MF digits. 5. The DSP reports leading and trailing edge in the 8 ms block that they are detected. MF events are not buffered. Software License D2 Technologies, Inc. and Maintenance Agreement August 4, 1997 CONFIDENTIAL 39 A.6.2 R1 Detection Performance requirements: Table A- 13 consists of MF R1 tone detection performance requirements taken