Follow these guidelines when configuring the ISUP layer for Japan-NTT network operation:
Set the SWITCH_TYPE attribute for all USAP, NSAP, and CIRCUIT entries to JNTT.
Specify 16-bit point codes in either hexadecimal or x.y.z dotted notation:
Specify hexadecimal point codes in the order in which they are transmitted on the link; that is, the U-code in the most significant seven bits, the S-code in the next four bits, and the M-code in the least significant five bits.
To specify J-NTT 16-bit point codes in x.y.z notation, add the following statement to the MTP 3 general configuration section:
PC_FORMAT JNTT
This statement tells the ISUP configuration utility to treat all subsequent point codes as mcode.scode.ucode format and generate 16-bit internal point codes with the U-code in the most significant seven bits, the S-code in the next four bits, and the M-code in the least significant five bits.
Note: The Japanese TTC variant is supported with the JNTT setting and the Global Messaging Toolkit.