
| 5 • Monitoring Status | Model 4520 & 4110 Series Getting Started Guide | 
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Table 10. SmartNode LED Indications
| LED | Description | 
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Note If an error occurs, all LEDs will flash once per second.
| Power | When lit, indicates power is applied. Off indicates no power applied. | 
| Run | When lit, indicates normal operation. Flashes once per second during boot (startup). | 
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| VoIP Link | When lit, indicates the gateway is registered on a gatekeeper, media gateway con- | 
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 | troller, associated to a remote unit, or has an active VoIP connection. Off indicates the | 
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 | unit is not configured or registered and has no active VoIP connection. Flashing green | 
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 | indicates that the unit is attempting or has failed to associate/register | 
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| FXS (each port) | Off indicates  | 
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 | cadence. | 
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| Ethernet (each port) | • Link: Lit when Ethernet link is up. | 
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 | • 100M: On when  | 
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 | • Activity: Flashes when data is received or transmitted from the unit to the LAN. | 
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 | • Error condition: All LEDs flashing once per second. | 
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| 50 | Status LEDs | 
