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Neels Hofmeyr nhofmeyr at sysmocom.deOn Tue, Oct 16, 2018 at 05:59:08PM +0700, Lam Ngoc Tuan wrote: > We have modified the SGSN configuration: set auth-policy to accept-all. No. For 3G, you require authentication, hence you need an external HLR that provides auth tuples, for both MSC and SGSN. I was unable to extract the attached rar file, please send a .tar or .tar.gz instead, or even better, just post a link to a pastebin, so we don't fill up people's mail inboxes. In your first trace it seems that your authentication did work out, i.e. HLR configured properly, but in the end the UE failed to respond with a TMSI Reallocation Complete. That's a very weird situation, I would normally associate that with an unreliable / unaccurate SDR based solution. But I assume you are using a nano3G? ~N -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/osmocom-net-gprs/attachments/20181016/c3eb5aac/attachment.bin>