from Traverse Technology and also the Teles PCI-TJ cards both based on the
chipset combination of the Siemens ISAC and the TJNet Tiger300/320 chips.
The itjc/i4b_hdlc.h file will hopefully soon be merged with the file
/usr/src/sys/i4b/layer1/i4b_hdlc.h.
Submitted by: Sergio de Souza Prallon <prallon@tmp.com.br>