Table 7-3 describes how to calculate the number of ports used by OpenTP1.

Table 7-3 Formulas for calculating the number of ports that OpenTP1 uses

Purpose	Formula
Accepting TCP/IP communications (receive port)	Number of OpenTP1 system processes + Number of user processes
Communications between system processes (send port)	Number of system processes that communicate with other nodes# Number of other nodes
Sending RPCs (send port)	Number of target nodes which the applicable UAP process sends RPCs to (per UAP process)
Responding to RPCs (send port)	Number of target client processes which the applicable UAP process issues RPCs to (per UAP process)

#

Total number of the following processes:

Number of namds

+ Number of istds (when TP1/Shared Table Access is used)

+ Number of trnrmds

+ Number of trnrvds (Value specified in the trn_recovery_process_count operand in the transaction service definition)