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SN4120 overview 17
SmartNode 4120 User Manual 1 • General information
SN4120 front panel
Figure 2. SN4120 front panel
Figure 2 shows SN4120 LEDs, the LED definitions are listed in table 4.
Table 4. SN4120 LED definitions
LED Description
Note If an error occurs, all LEDs will flash once per second.
Power When lit, indicates power is applied and the unit is in normal operation. Off indi-
cates no power applied. Flashes once per second during boot (startup).
VoIP
•
On indicates that the SN4120 is registered to an H.323 gatekeeper/SIP
server, or, in the case of direct routing, has at least one active VoIP connection.
•
Off indicates that the unit is not configured or registered, or has no active
direct-routed VoIP connection.
•
Flashing green indicates that the unit is attempting to register or has failed
to register.
BRI Off indicates no active calls. Blinking when one or two B-channels are connected.
Ethernet
•
On when the Ethernet connection has a link indication.
•
Flashes when data is received or transmitted at the corresponding Ethernet port.
VoIP
BRI/So 0/1
Power
Ethernet
BRI/So 0/0