MANUFACTURER | MODEL | SWITCH | AUTO- | SEE | |
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| SETTING | DIAL | NOTE | |
David Systems | None | 3 | 2 | ||
Specified | |||||
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Eagle | None | 2 | Yes |
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Specified |
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Ericcson | MD110 | 3 | Yes |
| |
Executone | Encore CX | 3 | No |
| |
| IDS | 3 | No |
| |
| Model 228 | See Notes | No | 7 | |
| Model 432 | See Notes | No | 7 | |
| Key Systems | 2 or 3 | Yes |
| |
Fujitsu | Focus 196 | See Note | No | 5 | |
| Others | 4 | Yes |
| |
Cohort | 3 | No |
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Harris | Lanier | 3 | Yes |
| |
Hitachi | Digital |
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| Model 200 | 1 | 2 | ||
| 1 | 2 | |||
Intecom | IBX System | 3 | No |
| |
Intertel | Hitech/123 | 1 | Yes | 4 | |
| 2 |
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| |
|
| 1 | 2 | ||
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| 3 | No |
| |
| Axxess |
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| |
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| 1 | Yes |
| |
| Others |
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Isoetec | Key systems | 3 | Yes |
| |
| Digital PBX | 1 | 1 & 2 | ||
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ITT | None | 2 | 2 | ||
| Specified |
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| |
Iwatsu | Omega | 2 | Yes |
| |
| Omega III | 2 or 3 | Yes |
| |
| Omega IV | 1 or 4 | Yes | 4 | |
Kokyo Co. | Kanda | 1 | Yes |
| |
Lanier | EKT - 220 | 2 | Yes |
| |
| (Elec. Key) |
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| |
Lexar | Telex | See Notes | No | 5 | |
Macrotel | None | 4 | Yes | 1 | |
| Specified |
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| |
Mitel | Superset | 2 or 3 | No |
| |
| 3 | No | 1 |