Siemens optiPoint 420 standard - Transferring Calls Directly to the Executive

Web Interface
107
Parameters for "Selected dialing"
Enter the phone number for direct inward dialing.
 page 101  page 31
Ringer Volume
Setting the ringer volume.
• Minimum value: 1 (quiet)
• Maximum value: 5 (loud)
• Default value: 3
 page 103  page 62