Toshiba GD-1210 - Manual (Page 25)

Description of Each Component 23
Connecting cables
Be sure that the power of the equipment is turned OFF before connecting the cables.
Do not connect this equipment and a telephone to a telephone connector in parallel.
1. LINE2 Connect a telephone line when the 2nd Line Board (optional) is installed.
2. LINE Connect a telephone line.
3. TEL Connect an external telephone (for a remote reception)
* An optional external telephone handset is not available for this version.
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