Siemens 600Series - Manual (Page 16)

1-2 ROLMphone 300/600 Series 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