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CHAPTER 3 System Messages
In Case of Tandem Connection
Type of connection
IC route number (HEX)
OPRT data
Note:This data displays when the IC Route number is larger than 63, and b6 of displays as “1” (otherwise,
“1” displays at any time). While the six-bit data of is self-sufficient in verifying the Route 1-63, this OPRT
data provides a supportive role to cover Route number larger than 63. Use the following method to analyze
the data:
- Trunk number of IC trunk
b7 b6 b0
b7 b6 b5 b4 b3 b2 b1 b0
b7 b3 b2 b1 b0
IC Route (1-63) =0000 IC Route No.
OPRT data (0:fixed) b0 - b5 of
IC Route (64 or larger) = OPRT data IC Route No.
OPRT data (variable) b0 - b5 of
b7 b6 b5 b4 b3 b2 b1 b0
b7 b6
1 0 = Tandem connection
1
b7: AC data
0/1=Internal trunk/External trunk
b6: OP data (0/1)
When OPRT data of is valid, “1” displays.
b0-b5: IC route number
• b6=0 Route number<64 Refer to the OPTN
• b6=1 <63 Route number data of
3
2
3
2
2
2
b0-b7: Trunk number of IC trunk
4 5