CONCEPT 32 - BABT TIF Card BA-6500-304 (Telephone Interface)

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.)

Location

The TIF is located in slot 2 of the concentrator and is keyed to prevent inadvertent insertion in an incorrect slot.

System Operation and Configuration

System operation and configuration is determined by an EPROM (Erasable Programmable Read Only Memory) located in the TIF.

A label on the EPROM identifies the EPROM Type (6500-xxxx)/Version No.(Vxxxx) and
Configuration (Cxxxx)


When removing boards from the concentrator it is essential that the concentrator
‘Rack Power’ is switched off. Note! It is not sufficient to just switch the ‘mains power’ off, because the concentrator will revert to battery back-up and the concentrator
will still be operational. Removing a board from a live system may damage both the board and other system components and render the concentrator inoperable.


When removing boards an ESD strap must be worn to protect against electrostatic
charge damaging devices. An ESD connection point is located on the front panel of
the concentrator for this purpose.


Note: When replacing a TIF, a ‘new’ TIF will not normally contain an EPROM. The EPROM in the ‘old’ TIF should be transferred to the new TIF to ensure system compatibility.


Please note the orientation of the EPROM when replacing it. When inserting the EPROM the ‘notch’ on top of the device ( identifying pin 1) should be the same orientation as the other devices adjacent to it. (Note: Incorrect orientation will destroy the device.) It is essential that any replacement EPROM matches the exact details of the one currently installed in the TIF in the concentrator. Should confirmation of EPROM details be required they may be found in the respective site manual.

 

Powered by Chapter Eight