Tutorials
| POTS Line | PBX Extension | |
| Single-Button
[EMERGENCY]
|
ETP-400, ETP-400V, ETP-100EB, ETP-100EBV, ETP-100MB, ETP-100MBV | ETP-400, ETP-400V, ETP-100EB, ETP-100EBV, ETP-100MB, ETP-100MBV |
| Single-Button
[TO CALL]
|
ETP-400C, ETP-400CV | ETP-400C, ETP-400CV |
| Two-Button | ETP-400D, ETP-400DV | ETP-400D, ETP-400DV |
| Keypad | ETP-400K, ETP-400KV | ETP-400K, ETP-400KV |
