How to pause a communication channel?

Hi All,

Need to borrow some wisdom please.

I have a PI 710 system which is sending IDOCs to 2 different ERP systems. Each of these systems will have downtime windows (planned and unplanned) and we'd like to develop a way where the communication channel for the affected system pauses sending IDOCs while the system is down. When the system comes back, PI will start sending IDOCs again.

The goal is to have an adaptive PI system that can respond to outages in one system or both systems.

I'm not sure how to do this - has anyone hit this before?

Thanks!

Tim