The following tables give the RAM addresses and the parameter calculation units that the machine uses for ringing signal detection and automatic dialing. The factory settings for each country are also given. Most of these must be changed by RAM read/write (SP2-102), but some can be changed using NCU Parameter programming (SP2-103); if SP2-103 can be used, this will be indicated in the Remarks column. The RAM is programmed in hex code unless (BCD) is included in the Unit column.
- The following addresses describe settings for the standard NCU.
| Address | Function | Unit | Remarks |
|---|---|---|---|
| 7EB52000 | Country/Area code for NCU parameters | Use the Hex value to program the country/area code directly into this address, or use the decimal value to program it using SP2-103-001 | |
| 7EB520B4 | PSTN: TX level from the modem | -N – 3 dBm | SP2-103-002 (parameter 01). |
| 7EB52072 | Acceptable ringing signal frequency: range 1, upper limit | 1000/ N (Hz) | SP2-103-003 (parameter 02). |
| 7EB52073 | Acceptable ringing signal frequency: range 1, lower limit | 1000/ N (Hz) | SP2-103-004 (parameter 03). |
| 7EB52074 | Acceptable ringing signal frequency: range 2, upper limit | 1000/ N (Hz) | SP2-103-005 (parameter 04). |
| 7EB52075 | Acceptable ringing signal frequency: range 2, lower limit | 1000/ N (Hz) | SP2-103-006 (parameter 05). |
| 7EB52076 | Number of rings until a call is detected | time(s) | SP2-103-007 (parameter 06). The setting must not be zero. |
| 7EB52077 | Minimum required length of the first ring | N x 20ms | See Note 2. SP2-103-008 (parameter 07). |
| 7EB52078 | Minimum required length of the second and subsequent rings | N x 20ms | SP2-103-009 (parameter 08). |
| 7EB52079 | Ringing signal detection reset time (LOW) | N x 20ms | SP2-103-010 (parameter 09). |
| 7EB5207A | Ringing signal detection reset time (HIGH) | N x 20ms | SP2-103-011 (parameter 10). |
| 7EB5204A | Do not change the settings. | ||
| 7EB5204B | Break time for pulse dialing | ms | See Note 1. SP2-103-013 (parameter 12). |
| 7EB5204C | Make time for pulse dialing | ms | See Note 1. SP2-103-014 (parameter 13). |
| 7EB5204D | Do not change the settings. | ||
| 7EB5204E | Minimum pause between dialed digits (pulse dial mode) | N x 20ms | See Note 1 and 4. SP2-103-016 (parameter 15). |
| 7EB5204F | Time waited when a pause isentered at the operation panel | N x 20ms | SP2-103-017 (parameter 16). See Note 1. |
| 7EB52050 | DTMF tone on time | ms | SP2-103-018 (parameter 17). |
| 7EB52051 | DTMF tone off time | ms | SP2-103-019 (parameter 18). |
| 7EB52052 | Tone attenuation level of DTMF signals while dialing | dBm (See Note 5) | SP2-103-020 (parameter 19). See Note 3. |
| 7EB52053 | Tone attenuation value difference between high frequency tone and low frequency tone in DTMF signals | dBm (See Note 5) | SP2-103-021 (parameter 20). The setting must be less than – 5dBm, and should not exceed the setting at 7EB52052h above. See Note 3. |
| 7EB52054 | Do not change the settings. | - | |
| 7EB52055 | Do not change the settings. | - | |
| 7EB971E8 to 7EB973E7 | Error code storage | - | |
| 7EB93800 to 7EB96517 | Communication history storage | - | |
| 7EB973E8 to 7EB982E7 | Communication error storage | - |
NOTES
- Pulse dial parameters (addresses 7EB5204A to 7EB5204F) are the values for 10 pps. If 20 pps is used, the machine automatically compensates.
- The first ring may not be detected until 1 to 2.5 wavelengths after the time specified by this parameter.
- The calculated level must be between 0 and 10.
The attenuation levels calculated from RAM data are:
High frequency tone:- – 0.5 x N7EB52052/7EB52054–3.5 dBm
- – 0.5 x N7EB52055 dBm
- – 0.5 x (N7EB52052/7EB52054 + N7EB52053) –3.5 dBm
– 0.5 x (N7EB52055 + N7EB52053) dBm
- N7EB52052, for example, means the value stored in address 7EB52052(H)
- 7EB5204A, 7EB5204D, 7EB5204E: The actual inter-digit pause (pulse dial mode) is the sum of the period specified by the RAM addresses 7EB5204A, 7EB5204D, and 7EB5204E.