Siemens 300 Series User Manual
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ROLMphone 300/600 User Guide
ROLMphone 300 Series Telephone
The ROLMphone 300 series offers two models.
• The RP312 has 12 feature keys and one line
extension.
• The RP312L also has a two-line display with up to
24 characters per line.
Figure 1–2. ROLMphone 312L Telephone