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General| Brand | jotron |
|---|---|
| Model | Phontech BTS 4000 |
| Category | Telephone Accessories |
| Language | English |
Diagram and labeling for the 12-line Type 4061 telephone with amplifier.
Details the Amplifier Unit, Type 4000, and its appearance.
Shows the Relay Unit, Type 9000, and its connections.
Illustrates the Plugbox for Headset with Call Stop, Type 4018.
Diagram of the Headset with PTT Switch and Plug, Type 0018.
Diagram of the Headset with PTT Switch, Type 9010.
Describes the interface and speech amplifier features of the unit.
Lists the features of the 24-line Type 4040 telephone.
Lists the features of the single-line Type 4050 telephone.
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