CONCEPT 32 - BABT TIF Card, BA-6500-304

The Telephone Interface Card (TIF) provides the only intelligence in the system and controls all concentrator operations.

One TIF is required for every 64 lines and has two speech circuits allowing two operators to independently service calls at the same time. ( Note: When Dual Line Cards are installed).

The TIF controls the following:

All Keypanel operations via an RS232 Interface including;
• Lamp Test Facility.
• Call Technician/Charger Fail Indicators and Sounders.
• Incoming call indication and sounder/s.
• Outgoing call indication and ring tone to handset.

All concentrator operations including;
• CB and LB ringing to line on instigation of an outgoing call.
• Call interlocking with a call in progress.
• Handset switching to line.
• Multiplexer Telephone Switching Control when two or more TIF’s are installed.
• PSU/Charger Failure Detection to initiate Call Tech or Charger Fail Warning.

The TIF initiates a 5 second pole to the Keyboard Serial Card to confirm the presence of the keyboard and acknowledgement of RS232 data.

Fault Codes

The TIF contains a single digit LED display providing a hexadecimal fault code to identify the fault to the technician. (Note: Fault codes are defined in the concentrator handbook.)