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Harald Welte laforge at gnumonks.orgHi Silke, I'm not entirely sure if I'm getting this right, so please clarify: You are looking for all of the below: 1) a simulated UE (possibly integrated with eNB) which can perform things like attach + PDN connection establishment over S1 to a MME, just like a real UE 2) an EPC (MME, S-GW, P-GW, HSS) exposing at least the S8 interface between S-GW and P-GW so that you can then also a) connect a real eNB to that same MME above b) operate a second, 3rd party P-GW next to the P-GW above, interfacing over S8 (GTP) to the S-GW above Does that correctly represent your requirement? I would assume that in general, nextepc would be able to work as your MME/S-GW/P-GW/HSS. I'm not sure which exact procedures you will need it to support (quite a number of them are not yet implemented, e.g. the S6 between MME and HSS is quite "rudimentary" AFAICT. The more interesting question is the "simulated eNB" part. I know that srsUE contains all the related NAS logic for the UE, but I'm not aware of a (public / open source) way to run it e.g. without real hardware against srsENB so that you have both UE and eNB covered, exposing an S1 interface. It would probably be best to inquire with SRS about this, maybe they can make that functoinality available either in their open source version or you could obtain it under their dual-licensing scheme. Unrelated to the above: I'm currently working on a TTCN-3 test suite for the MME, which basically includes the eNB-Side S1 interface, as well as the basic NAS procedures of a UE, so we can test the [nextepc] MME. But it's unfortunately at a development stage where it's not yet doing anything useful yet - and it's also just a hobby/pet project I'm doing in my spare time, without any clear timeline or any commercial backing :/ There are of course various proprietary options available on the market (like the NG4T testers), but I guess you're inquiring here as you're specifically looking for open source. -- - Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)