Philips SOPHO SuperVisor 25 Engineer's Manual page 10

braille format.
• Call Charging Display
The operator can mark an outgoing call for call charging. After completion of the call the
cost (number of metering pulses or call duration) can be displayed (iS3000 facility). If the
call is free of charge, it is also displayed.
• Calling Number Display (In case of ISDN trunks)
If an ISDN directory number is passed on by the public exchange to the ISPBX, this calling
number is displayed on the display of the console.
• Communication Interface
The communication interface is a V.24 interface which can be used for the following
purposes:
- Directory up/down loading;
- Speed dialling key data and Status Monitoring data up/down loading from PC;
- Dialling;
- Braille interface;
- Program downloading.
• Demo Mode
Various windows (e.g. name display) are standard available for training, and demonstration
of the features of the console. The Demo Mode can only be used if the console is set 'Out
of Service'. Model 25 has also the facility to demonstrate the VPU (Voice Processing Unit)
for call handling.
• Directory Handling
Directory handling is a feature of model 35. It is equipped with an internal directory
memory of 50 kb. The directory information (name, DNR etc.) is stored according to an
algorithm. Therefore it is not possible to denote the maximum number of entries. If all
number and branch information is unique for 600 entries of 80 characters, all entries can
be stored. In case the entries are 40 characters average (typical value), at least 1200 entries
can be stored. In practice more entries can be stored as result of the storage algorithm.
• Directory Up/downloading
The directory data can be up/down loaded to/from a PC.
• Enhanced Keyboard Layout
Model 35 has a alpha numeric keyboard layout. This means that the keyboard can also be
used to enter names messages etc. Two different keyboards are available:
- International (QWERTY standard);
- German (QWERTZ standard).
The tops of the keys on the keyboard are different. A number of them are hollow and a
number of them are flat according to a logic pattern. This allows easy orientation for
visually handicapped users.
• Firmware Uploading
Initially the factory stores the firmware in the FEPROMS. In case of a firmware update or
in case of firmware problems, it can be uploaded from a PC via the V.24 interface to the
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