What this User’s Guide covers
This User’s Guide covers the use of the following with your ESI business communications system:
- ESI 60 Business Phone (digital and IP versions)
- ESI 40 Business Phone (digital and IP versions)
- 48-Key Feature Phone (digital and IP versions)
- 24-Key Feature Phone
- 12-Key Feature Phone (legacy product)
- ESI Cordless Handsets (digital and IP versions)
- Expansion Consoles
- Analog stations
| IP Server 900 | ESI Communications Servers (ESI-1000, ESI-600, ESI-200, ESI-100, ESI-50, ESI-50L) |
ESI C-Plus Executive |
IVX C-Class | |
| ESI 60D (digital) Business Phone |
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| ESI 60IP Business Phone (Gigabit or 10/100) |
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[1.] | ||
| ESI 40D (digital) Business Phone |
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| ESI 40IP Business Phone |
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[1.] | ||
| 48-Key Digital Feature Phone |
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| 48-Key IP Feature Phone II |
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[1.] | ||
| 24-Key Digital Feature Phone |
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| 12-Key Digital Feature Phone |
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| ESI Digital Cordless Handset II |
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| ESI [local] IP Cordless Handset II |
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[1.] | ||
| ESI Remote IP Cordless Handset II |
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[1.] | ||
| Original ESI Digital Cordless Handset |
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| Original ESI [local] IP Cordless Handset |
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[1.] | ||
| Original ESI Remote IP Cordless Handset |
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| Expansion Consoles2 | ![]() |
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| Analog stations | ![]() |
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If system is IP-enabled. (Please note that the ESI-50L must be upgraded to an ESI-50 before it can be IP-enabled.) If necessary, consult your System Administrator for more information.
2.
See this page for phone/console compatibility information.

