Siemens TC12 Installation, Commissioning And Maintenance Handbook page 67

2.4.8.11 IMD Information Screen, Key to Press 'I'
This provides information about the Intelligent Modem Driver boards in the PC as
follows.
Top Line: Address of the dual ported RAM through which the PC communicates
with the IMDs.
Below this there are details of each of the four possible IMDs, as follows.
Status of the IMD:
Either OK / NOT INSTALLED / FAULTY / SUM CHECK ERROR.
Followed by a series of digits. These series of digits for each IMD relate to the
states of certain MODEM lines as defined below.
Raised RTS and did not
receive CTS
Started transmitting and
lost CTS before completed
666/HE/43100/000
TC12 Installation, Commissioning & Maintenance Handbook
Current
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Cumulative
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