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j h jhlistserv at gmail.comCould someone explain to me the difference between Silent Call, Test Call, and A-bis proxy (ip.access-proxy). To my understanding Test Call opens a pass through UDP port straight to the MS. While SilentCall just creates just creates a open channel. My confusion I believe comes from where you're "sitting" in the eco-system between Silent Call and Test Call. I also am confused after looking at ip.access-proxy. It clearly opens a port for injection either towards the BSC or BTS. However, does a silent-call need to be active to get data to the MS? When I try to inject a simple SMS using ip.access-proxy, (via copying traffic seen across ip.access), I get length disagrees with header. What is ip.access injection expecting in terms of data format? Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20130508/6ebcc6ff/attachment.htm>