AASTRA 53i Guia Da Instalação

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Model 57i CT IP Phone Installation Guide
Phone Parts
Optional Accessories for 57i CT (Not Included)
A PoE (Power over Ethernet) inline power injector supplies 48v power to 
the 57i CT through the Ethernet Cable on pins 4 & 5 and 7 & 8. 
Warning: Do not use this PoE inline power injector to power other 
devices.
The Model 536 Expansion Module (536EM) and Model 560 Expansion 
Module (560EM) attach to the right side of the 57i CT phone. Model 536EM 
provides 36 additional softkeys for the phone. Model 560EM provides 60 
additional softkeys. For more information about the expansion modules, 
see the section, 
on page 
Additional Ethernet Cable
PoE (Power over Ethernet)
Inline Power Injector
(category 5/5e straight
through cable)
Model 536EM Expansion Module
Model 560EM Expansion Module