I think compressing daily X.25 transfers for a national tax agency that pay per Satellite use.
The challenge in that context was that the compression should be done in an IBM mainframe without buying C because it was a infinite bureaucracy process. Another challenge was that it was not possible to connect the mainframe to the ethernet network because they also need to buy an expensive network interface. So we cannot compress it in a normal PC and transfer it automatically.
We did two versions one in Cobol and another in REXX.
The challenge in that context was that the compression should be done in an IBM mainframe without buying C because it was a infinite bureaucracy process. Another challenge was that it was not possible to connect the mainframe to the ethernet network because they also need to buy an expensive network interface. So we cannot compress it in a normal PC and transfer it automatically.
We did two versions one in Cobol and another in REXX.