Country Differences
Table D-1. United States and Canada
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Tone Detector |
| TN2182 | TN744C | TN748D |
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| TN2182 | TN780 | TN768 |
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Call Classifier |
| TN744C | TN2182 | TN744B |
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R2MFC Circuit |
| Not Ap plicable |
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Speech Synthesizer |
| TN725B |
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Announcement |
| TN750C | TN750B |
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Auxiliary Trunk |
| TN763D |
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Analog Direct Inward Dialed (DID) Trunk |
| TN753 |
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Analog Central Office Trunk (no PPM) * |
| TN747B |
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Analog Central Office Trunk (w/PPM) * |
| Not Ap plicable |
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4 Wire Tie Trunk |
| TN760D |
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2 Wire Tie Trunk |
| Not Ap plicable |
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Digital Central Office (CO)/Direct Inward |
| TN464F | TN464E | TN464D | TN767 |
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Dialed (DID) Trunk |
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Digital Tie Trunk |
| TN464F | TN464E | TN464D | TN767 | TN722B |
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Digital Integrated Services Digital |
| TN464F | TN464E | TN464D | TN767 |
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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 |
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4 Wire Digital Line |
| TN754B | TN762B |
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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-2. Argentina
Argentina
Tone Detector | TN744C | TN2182 | TN748D | TN748C |
TN2182 | TN780 |
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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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