
Chapter 1: Connections and Setup
| THG540 | Tel 2 | Tel 1 | Message | Cable | Cable | PC | Internet | Description | |
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| MTA | OFF | FLASH | 
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 | MTA DHCP | |
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| FLASH | OFF | 
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 | MTA SNMP/TFTP | ||
| initialization | 
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 | FLASH | FLASH | 
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 | RSIP | |
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 | <CM Normal Operation> | 
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 | Both Lines  | ||||
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| MTA | ON | FLASH | 
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 | Tel1  | |
| Operation | FLASH | ON | 
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 | Tel1  | |
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 | FLASH | FLASH | 
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 | Both Lines  | |
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| SW | ON | FLASH | FLASH | FLASH | FLASH | FLASH | FLASH | A software download and while updating the | |
| Download | 
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 | FLASH memory | |
| FLASH | ON | 
 | From Right to Left | 
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| Operation | 
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