Chapter 2 Wireless Device Overview
LEDs
Table | 3G LED Descriptions (continued) | ||
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| Color | Description |
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RSSI |
| Green (solid) | Signal > |
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| Very strong signal |
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| Green (four blinks and | Signal <= |
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| then a long pause) | Strong signal |
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| Green (two blinks and | Signal <= |
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| then a long pause) | Fair signal |
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| Green (one blink and | Signal <= |
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| then a long pause) | Marginal signal |
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| Off | Signal <= |
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| Unusable signal |
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SIM1,2 |
| Green / Yellow (one | SIM in slot 0 active, SIM in slot 1 is not. |
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| green blink followed by |
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| two yellow blinks) |
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| Yellow / Green (one | SIM in slot 1 active, SIM in slot 0 is not. |
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| yellow blink followed |
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| by two greenblinks) |
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| Off / Green (two green | No SIM in slot 0, SIM present in slot 1. |
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| blinks and then pause) |
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| Green / Off (Slow single | SIM present in slot0, no SIM in slot 1. |
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| green blink and then |
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| pause) |
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| Off / Off | No SIM present in either slots. |
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3G |
| One blink green and | For 1xRTT, EGPRS, GPRS service. |
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| then pause |
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| Two blink green and | For EVDO, EVDO/1xRTT, UMTS. |
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| then pause |
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| Three blink green and | For EVDO/1xRTT RevA, HSPA, HSUPA/HSDPA. |
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| then pause |
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| Green (solid) | For HSPA PLUS. |
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1.Not applicable to Verizon and Sprint EVDO modems.
2.There is only one LED to indicate the status two SIMs. A
Use the following show commands to check the LED status for your router:
•show platform led (for all LEDs)
•show controller cellular 0 (for 3G LEDs)
The following is a sample output from the show platform led command and shows the LED status:
router# show platform led
Cisco 819 Series Integrated Services Routers Software Configuration Guide
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