Hello, I'm new in Pjsip and I use the version 2.4.5. I make an app in Ios and I can receive incomming calls but when I make calls i get the next error: *--end msg--* *00:29:06.267 coreaudio_dev. !...core audio stream started* *00:29:06.272 pjsua_media.c .Call 0: initializing media..* *00:29:06.272 pjsua_media.c ..RTP socket reachable at 192.168.0.198:4000 <http://192.168.0.198:4000>* *00:29:06.272 pjsua_media.c ..RTCP socket reachable at 192.168.0.198:4001 <http://192.168.0.198:4001>* *00:29:06.272 pjsua_media.c ..Media index 0 selected for audio call 0* *00:29:06.273 pjsua_media.c .Call 0: deinitializing media..* *00:29:06.273 pjsua_media.c ..Call 0: cleaning up provisional media, prov_med_cnt=1, med_cnt=0* *00:29:06.273 pjsua_media.c .Call 0: deinitializing media..* *00:29:06.273 XCPjsua.c Error making call: Missing route set (for tel: URI) (PJSIP_ENOROUTESET) [status=171005]* *00:29:06.273 pjsua_core.c Shutting down, flags=0...* *00:29:06.273 pjsua_core.c PJSUA state changed: RUNNING --> CLOSING* *00:29:06.275 pjsua_acc.c !....SIP outbound status for acc 0 is not active* *00:29:06.276 pjsua_acc.c ....IP address change detected for account 0 (192.168.0.198:5060 <http://192.168.0.198:5060> --> 188.86.219.124:1024 <http://188.86.219.124:1024>). Updating registration (using method 2)* *00:29:06.276 pjsua_acc.c ....Acc 0: setting registration..* *00:29:06.279 pjsua_core.c ......TX 539 bytes Request msg REGISTER/cseq=11897 (tdta0x16b43600) to UDP 89.46.70.133:5060 <http://89.46.70.133:5060>:* *REGISTER sip:89.46.70.133 SIP/2.0* *The client is in nat lan. With other client and the same server run ok.* *Can anyone help me?* Thank you!.