Country Differences
Table D-12. Japan
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| Japan |
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Tone Detector |
| TN744C | TN2182 | TN748D |
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| TN2182 | TN780 | TN756 |
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Call Classifier |
| TN744C | TN2182 | TN744B |
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R2MFC Circuit |
| Not |
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| Applicable |
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Speech Synthesizer |
| TN725B |
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Announcement |
| TN750C | TN750B | TN750 |
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Auxiliary Trunk |
| TN763D | TN763C |
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Analog Direct Inward Dialed (DID) |
| TN429 |
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Trunk |
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Analog Central Office (CO) Trunk (no |
| TN429 | TN465 |
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PPM *) |
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Analog Central Office (CO) Trunk |
| Not |
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(w/PPM *) |
| Applicable |
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4 Wire Tie Trunk |
| TN760D |
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2 Wire Tie Trunk |
| TN439 |
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Digital Central Office (CO)/Direct |
| TN464F | TN464E | TN464D | TN464C | TN767 |
Inward Dialed (DID) Trunk |
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Digital Tie Trunk |
| TN464F | TN464E | TN464D | TN464C | TN767 |
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Digital Integrated Services Digital |
| TN464F | TN464E | TN464D | TN464C |
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Network (ISDN) Central Office Trunk |
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8 port Analog Line |
| TN742 |
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16 port Analog Line |
| TN746B | TN479 |
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4 Wire Digital Line |
| TN754B |
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2 Wire Digital Line |
| TN2181 |
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Data Line |
| TN726B |
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*PPM means Periodic Pulse Metering.
Table D-13. Mexico
| Mexico |
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Tone Detector | TN744C | TN2182 | TN748D |
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TN2182 | TN780 | TN756 | |
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Call Classifier | TN744C | TN2182 | TN744B |
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R2MFC Circuit | TN744C | TN2182 | TN744B |
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Speech Synthesizer | TN725B |
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