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DEFINITY Made Easy Tools
Issue 2, November 2000
DEFINITY Hardware
TN794
In R9si systems, the TN2401 Net/Pkt interface circuit pack replaces the TN794. The TN2401 provides the functionality of the TN777B (NETCON), the TN778 (PACCON), and, if BX.25 connectivity is not required, the TN765 (PI).
In R8si systems, the TN794 provides LAPD connections over the TDM bus, as currently provided by the Processor Interface (TN765). In R8si systems, the TN794 replaces the NETCON (TN777B) and PACCON. The TN777B is replaced by the TN794 Network Control/Packet Interface (for R7 and later). It is not backward compatible with earlier releases. The TN794 inserts into the NETCON slot and may require a TN2400 Net/Pkt Backplane Connection (R6si and older field upgrades when reusing the existing Control Cabinet only). A modified TN790B processor circuit pack and a TN792 DUPINT circuit pack are required for duplicated systems.
Processor carriers J58890L-2 List 25 or List 31; J58890M-2 List 15; J58890AH-2 List 13; or J58890AJ-2 List 12 require only theTN794 circuit pack; that is, the TN794/TN2400 sandwich pack is not required.
All earlier carriers require the TN794/TN2400 sandwich circuit pack assembly.
For more details, see When to use the TN794 versus the TN794/TN2400 sandwich pack.
