Nortel R2MFC, Installation And Configuration Manual, Page: 101 / 114

Configuring DIP switch settings and definitions 101
R2MFC Media Bay Module Installation and Configuration Guide
R2 line signaling
Brazil Config 2 R2 signals are according to CCITT standard. See Table 37 for the Brazil Config 2
R2 signal definitions.
Note: CD bits are not used. They are set to 01 in transmit direction, and are ignored in receive direction.
MFC Register Signaling
MFC signal definitions depends on the stage and the direction of the call, there are four tables of
15 signals each: the first stage uses
I signals forward and A signals backward, and the second stage
uses II signals forward and B signals backward. The meaning of the signals can also be different
when being transmitted or received. Meanings of the MFC signals are configurable. MFC signal
tables are part of the country-specific parameters.
Table 38 shows the MFC signal configuration in the R2MFC MBM accessed through the CLI for
Brazil Config 2. Table 39 on page 102 shows the MFC transmitted signal configuration in the
R2MFC MBM accessed through the CLI for Brazil Config 2. These values are preconfigured by
the faceplate DIP switches as shown in
Figure 30 on page 92 . See Chapter 7, “Command Line
Interface (CLI),” on page 73 for information on the CLI.
Table 37 Brazil Config 2 R2 A/B signals
Forward Backward
Signal A B Signal A B
Idle 1 0 Idle 1 0
Seize 0 0 Seize acknowledge 1 1
Clear forward 1 0 Answer 0 1
Clear back 1 1
Block 1 1
Table 38 Interpretation of received MFC signals (Sheet 1 of 2)
Meaning Signal Meaning Signal Meaning Signal Meaning Signal
FW_Digit_1 I_1 FW_Categ_1 II_1 BW_NextDig A_1 BW_FreeCharge B_1
FW_Digit_2 I_2 FW_Categ_2 II_2 BW_ReSend A_2 BW_Busy B_2
FW_Digit_3 I_3 FW_Categ_3 II_3 BW_BCateg A_3 BW_B_Congest B_3
FW_Digit_4 I_4 FW_Categ_4 II_4 BW_A_Congest A_4 BW_B_Congest B_4
FW_Digit_5 I_5 FW_Categ_5 II_5 BW_CategOrAni A_5 BW_FreeNoChrg B_5
FW_Digit_6 I_6 FW_Categ_6 II_6 BW_Illegal A_6 BW_B_Congest B_6
FW_Digit_7 I_7 FW_Categ_7 II_7 BW_Prev2Digit A_7 BW_Unlocated B_7