ESI phone systems at a glance
Return to: IVX S-Class • E-Class (IVX/IP) • IVX X-Class
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Phones/systems compatibility |
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| IVX |
IP E-Class Gen. II |
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IVX C-Class Gen. II |
IVX S-Class Gen. II |
IVX E-Class Gen. II |
IVX X-Class | ||||||||
| IVX 20c | IVX 56s | IVX 72e |
IVX 128e |
IVX 128x |
IVX 256x |
IP 40e |
IP 200e |
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| Voice messaging configuration |
No VM | 2-pt VM |
IAM | 4-pt VM |
6-pt VM |
8-pt VM |
16-pt VM |
24-pt VM |
24-pt VM |
8-pt VM |
16-pt VM |
| 48-Key Feature Phone |
— | — |  |
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| 24-Key Feature Phone |
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n/a | n/a |
| 12-Key Feature Phone |
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n/a | n/a |
| 60-Key Console support |
— | — | |
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IP
phone support |
— | — | — | — | — | Opt. | Opt. | Opt. | Opt. | |
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Remote
IP Feature Phones |
— | — | — | — | — | Opt. | Opt. | Opt. | Opt. | Opt. | Opt. |
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Features and options |
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| IVX | IP E-Class | ||||||||||
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IVX C-Class Gen. II |
IVX S-Class Gen. II |
IVX E-Class Gen. II |
IVX X-Class | ||||||||
| IVX 20c | IVX 56s | IVX 72e |
IVX 128e |
IVX 128x |
IVX 256x |
IP 40e |
IP 200e |
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| Voice messaging configuration |
No VM | 2-pt VM |
IAM | 4-pt VM |
6-pt VM |
8-pt VM |
16-pt VM |
24-pt VM |
24-pt VM |
8-pt VM |
16-pt VM |
| Maximum
call- processing ports |
20 | 20 | 56 | 56 | 56 | 72 | 126 | 126 | 252 | 58 | 192 |
| Available port card slot(s) |
1 | 1 | 3 | 3 | 3 | 4 | 7 | 7 | 14 | 2 | 10 |
| Smallest configuration Lines × extensions × analog ports |
3×6 ×2 |
3×6 ×0 |
4×8 ×2 |
4×8 ×2 |
4×8 ×2 |
6×12 ×0 |
6×12 ×0 |
6×12 ×0 |
6×12 ×0 |
3×0 ×3 |
3×0 x3 |
| Maximum CO lines | 6 | 6 | 16 | 16 | 16 | 42 | 66 | 78 | 84 | 30 | 66 |
| Maximum extensions | 12 | 12 | 32 | 32 | 32 | 48 | 84 | 84 | 168 | 28 | 96 |
| Maximum analog ports | 2 | 2 | 8 | 8 | 8 | 16 | 28 | 28 | 56 | 6 | |