Hardware Description and Reference for Avaya ... - Avaya Support

Circuit packs, channel service units, and power supplies
TN2401/TN2400 network packet interface
complex assembly for SI upgrades
Note: This
Note:
circuit pack is supported only for Communication Manager R2.2 and earlier.
Note:
Note: This circuit pack is no longer sold.
The TN2401/TN2400 network packet interface complex provides:
● A network control interface (NETCON)
● A packet interface (PACCON)
● A processor interface (PI) if BX.25 connectivity is not required
● Eight asynchronous data channels
The TN2401/TN2400 does not include modems.
The TN2401/TN2400 is required for the SI model to save translations to the 5-volt ATA flash
memory card.
The TN2401/TN2400 complex and the TN2404 processor is required for the following
upgrades:
● A G1 or G3iV1 MCC1 with a TN773 Processor
● An SI system with a TN786B Processor when reusing the existing control carrier cabinet
● An SI system with a TN790 or 790B Processor. Any R5 or R6 system has the old control
carrier backplane and requires the TN2401/TN2400. R7 and R8 systems can have either
the old control carrier backplane or the new control carrier backplane. The backplane type
must be verified before the upgrade order is placed so that the right characteristic
selection can be made. If the type of carrier is not known, a visual inspection of the R7 or
R8 system is required. The old backplane is being used if the system has a TN794/
TN2400 in the network control and packet control slots. If nothing is in the packet control
slot, the new backplane is being used.
264 Hardware Description and Reference for Avaya Communication Manager