Specifications

Line and Station Boards and Special Components
GCA39-825 Rev 2, Issue 4/02 Page 2 Printed in the USA
Line and Station Boards
Overview
• In the FX family of systems, all line and station boards are compatible between the FXT,
FXS, and FXII.
• Differences between the systems usually occur when battery backups and power supplies are
compared.
• This section discusses the telephony boards, old and new, supported by the FXT, FXS, and
FXII.
• Any components that deviate in compatibility are noted with the appropriate system.
• All line and station boards have status lights and pre-charge jacks. The Green LED on each
line and station board gives an indicator of the in-use status or proper operation of the board.
See the chart below for more information on identifying a board’s status:
Loop-Start Line Board Rapid flash = Malfunctioning line board microprocessor
Off with repeated 5 second blink on = normal operation with all lines idle
On with repeated 5 second blink off = normal operation with at least one line busy
Steady on or steady off = board malfunction
Station Board Rapid flash = malfunctioning microprocessor
Off with repeated 5 second blink on = normal operation with all stations idle
On with repeated 5 second blink off = normal operation with at least one station busy
Steady on or steady off = board malfunction
Resolving a Status LED Steady-On Condition
• The following points identify why the LED on a board may be in the steady-on state:
* The default common code software has not detected the board in the system. This
generally happens when a new board (e.g., VoIP board) cannot be detected by Demo
software prior to an initialization.
* The physical slot that the board is in actually contains a different board in VMMI
programming.
* The board has been physically installed but not yet added to VMMI programming.