Specifications
General Descriptions
1. | Capacity | CO line | 2 |
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| Extension | 6 |
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2. | Control Method | Stored Program CPU: 8 bits CPU |
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| Control ROM: 64 KB, Control RAM: 8 KB | |||
3. | Switching Method | Space Division CMOS Crosspoint Switch | |||
4. | Power Supplies | Primary | AC | ||
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| Secondary | Circuit Volt: +5V, +15 V, +30 V | ||
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| Power Failure | CO 2 assigned to extension 22 | ||
5. | Dialling | Outward |
| Dial Pulse | 10 PPS |
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| Tone Dial |
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| Internal |
| Dial Pulse | 10 PPS, 20 PPS |
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| Tone Dial |
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| Mode Conversion |
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6. | Connector | CO |
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| Extension |
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| Doorphone |
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7. | EXT Connection | Cable |
| 1 pair wire (single line telephone) | |
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| 2 pair wire (proprietary telephone) | |
8. | Intercom paths | 2 (including the doorphone path) |
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Characteristics |
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1. | Station Loop Limit | Proprietary telephone | 40 ohms | ||
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| Single line telephone | 600 ohms including set | ||
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| Doorphone |
| 20 ohms | |
2. | Minimum Leak Resistance | 15000 ohms |
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3. | Maximum Number of Station |
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| Instruments per line | 1 (proprietary telephone) or 3 (single line telephone) | |||
4. | Ring Voltage | 90 Vrms at 25 Hz depends on Ringing Load | |||
5. | Primary Power | AC | |||
6. | Central Office Loop Limit | 1600 ohms maximum |
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7. | Environmental Requirements ... |
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