NJE Protocols

Nodes in an NJE network are connected by lines such as SNA sessions, channel-to-channel adapters, leased or dial-up telephone lines, microwave links, or satellite. An NJE connnection is the use of NJE protocols between two nodes. NJE protocols are rules that direct the logical structure, format and operational sequence for transmitting NJE transfer units between two nodes in an NJE network. The three NJE protocols are:
  • Binary synchronous communications (BSC)
  • LU type 0 Systems network architecture (SNA)
  • Channel-to-channel (CTC).

Channel-to-channel protocols are similar to BSC protocols and are treated the same in this information.

NJE protocols are divided into five layers, as illustrated in Figure 1. The remaining information in this topic gives an overview of these layers (and the following topics provide more detailed information). "System-Dependent Considerations" contains product-specific information about these layers.

Figure 1. NJE Protocol Layers
NJE Protocol Layers
Parent topic: Introduction to Network Job Entry (NJE)