KX-NCP1290CJ (serv.man2) - Panasonic PBX Service Manual (repair manual). Page 9

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9
     KX-NCP1290CJ
3.2.3.
Local Highway Interface Function
This card has the local highway at 2.048Mbps rate and local TSW in order to switch the talk channel (Bch), which is extracted
from ISDN primary rate by PRI-IC (IC301), to H.100 interface. (ASIC (IC2) internal module)
Also, the highway assignment is different for that the number of Bch differs in 2.048M system and 1.544M system. Shows the
highway timing.
For more information, see the ASIC (IC2) specification and PRI-IC (IC301) databook.
Highway timing
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