Motorola MTR2000 T5544 Instruction / Field Service Manual page 229

Auxiliary I/O Board
Notes
CAUTION
12
The shaded areas indicate default manufacturing settings.
Note 1: This is an active low; that is, no current to the Opto Input.
Note 2: This configuration, with P6 out (PTT when current to the Opto
Input) represents the E Signal of 4 wire E&M Trunk Type I Phone
Signalling. The opposite direction of the E&M is covered in
Note 3.
In this configuration the second remaining unused input type
must be jumpered to the SPI Buffer. The Buffer Input should
!
never be left floating; otherwise the IRQ Generator will not
function properly (i.e., use either P2-1&2 or P9-7&8).
Note 3: This configuration represents the M Signal of 4 wire E&M Trunk
Type I Phone Signalling. The opposite direction of the E&M is
covered in Note 2.
Note 4: Indicates that the configuration is only available when the board
is plugged into Option slot 1.
Note 5: See also Table 5 for detailed information.
68P81096E53-C
09/30/05