IP Server 900 Hardware Installation Manual
Phones
F.3
ESI Cordless Handsets
The IP Server 900 also supports ESI’s digital, Local IP, and Remote IP
Cordless Handsets
(but only the ESI
Cordless Handset II models,
not
the original ESI Cordless Handset).
The ESI Cordless Handset II includes seven familiar fixed feature keys, eight programmable feature keys, a
speakerphone, and a headset jack. The Base Phone for the ESI Digital Cordless Handset II uses a standard line
cord and is line-powered. The Base Phone for each ESI IP Cordless Handset II (Local IP or Remote IP) uses
network cabling and receives (and requires) Power over Ethernet (PoE). The ESI Remote IP Cordless Handset II
Base Phone also includes a jack into which the user can plug an analog CO line. This gives the home-based
teleworker the convenience of using both home and business lines with the ESI Remote IP Cordless Handset II.
Each ESI Cordless Handset II model employs advanced DECT 6.0 technology which, as compared to the
original ESI Cordless Handsets, allows more secure communications and — through the use of one or more
optional ESI Cordless Handset II Repeaters — greater range.
Important:
Each ESI IP phone draws up to 7.25 watts
1
at 48 volts DC; therefore, each advertises itself to a Power over
Ethernet switch as a Class 3 device per the 802.3af standard. Most PoE switches adhering to this standard
will provide up to 12.5 watts for each Class 3 device.
1
An ESI desktop IP phone’s power consumption takes into account an optional 60-Key Expansion Console.