This document describes the function of the front and back panel LED lights on the TM822G/CT & TM822R.
Front Panel

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Order | LED Name | Description |
A | Battery | Indicates the battery status. |
B | Tel 2 | Indicates the status of telephone line 2. |
C | Tel 1 | Indicates the status of telephone line 1. |
D | Link | Indicates Ethernet connectivity between the Telephony Modem and computer. It may be yellow or green to indicate the connection speed. |
E | Online | Indicates Internet data transmission status. |
F | US | Indicates upstream connectivity. It may be yellow or green to indicate the connection speed. |
G | DS | Indicates downstream connectivity. It may be yellow or green to indicate the connection speed. |
H | Power | Indicates whether AC power is available to the unit. |
Back Panel

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Port Name | Description |
 10/100/1000 | One one-gigabit Ethernet port for RJ-45 network cable connection:
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