Installing IP500/IP500 V2 Page 361
15-601042 Issue 28c (19 August 2013)IP Office 9.0
System Components: Phone Add-Ons
10.12.6 EU24BL
The maximum number of button module buttons supported, of any type, on a single system is 1024 .
Provides an additional 24 programmable buttons. The EU24BL is physically similar to the EU24 but includes a backlight
function that matches 4621 phone. For additional limitations see Phone Add-Ons .
· Only the cable supplied with the EU24/EU24BL should for connection to the EU24/EU24BL. This cable should
only be connected to the port marked EU24 on suitable phones. Doing otherwise will cause damage to the EU24/
EU24BL and the equipment to which it is attached.
4620, 4621, 4625, 5620, 5621.