The service allows you finding out who has called you, when the telephone line was busy, switched off or was outside the zone of coverage. By doing so, it ensures that an important call will not be missed.
GXP2124 is an enterprise class IP-phone, which is equipped with 240x120 graphic LCD display with a backlight, 4 line keys supporting up to 4 SIP accounts, four special programmable context-sensitive (in the language XML) buttons, 24 +4 programmable XML-speed dial buttons, dual network ports with integrated PoE, five-party conferencing and Electronic Hook-Switch (EHS).