Restrictions for ISC TCP/IP support

The following functionality is not supported by ISC TCP/IP.

• CICS® transactions that use the SEND(INVITE)/RECV protocol for synchronous communication
• CICS transactions that use the SEND(LAST)/RECV protocol
• Extended Recovery Facility (XRF)
• IMS operator commands except for /DISPLAY and /RDISPLAY
• IMS conversational mode transaction
• IMS response mode transactions, including Fast Path
• IMSplex Terminal Management (STM)
• Front-End Switch (FES)
• Message Format Service (MFS)
• VTAM® Generic Resources (VGR)