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10 MBU 400 Installation Guide
MBU - Top View
MBU - Rear View
POWER CONNECTION
TELEPHONE LINE
CONNECTION PORT
(PSTN)
RESET BUTTON
for activating configuration
changes and enabling handset
registration
LAN CONNECTION PORT
for Ethernet cable
MBU - Top and Rear Views
POWER INDICATOR
Illuminates when
power is on
I-NET INDICATOR
I-net indicator flashes during
boot. It indicates that the MBU
has received an IP address
VOIP INDICATOR
Indicates that the MBU is
connected to the Internet
Telephony Service Provider
CALL INDICATOR
Call indicator flashes during
firmware update. Constant light
indicates landline or
Internet call in progress.