We had been constrained for months by our dependency on the switch and a rigid simulator that forced all test traffic through the switch layer. Working with Tristha’s SiPay simulator, we were able to bypass switch entirely and test directly against the core by building the required AS 2805 flows in SiPay, with no new code and no configuration changes to our environment, and this has now unlocked faster regression and far better reuse of our existing script automation assets.