Hello. I use PJSIP 2.8 When I run simpleua and receive incoming call from PhonerLite I get error . root@test-vm:~# /usr/src/pjproject-2.8/pjsip-apps/bin/samples/x86_64-unknown-linux-gnu/simpleua 06:54:36.117 os_core_unix.c !pjlib 2.8 for POSIX initialized 06:54:36.117 sip_endpoint.c Creating endpoint instance... 06:54:36.117 pjlib select() I/O Queue created (0x563cb99e4990) 06:54:36.118 sip_endpoint.c Module "mod-msg-print" registered 06:54:36.118 sip_transport.c Transport manager created. 06:54:36.119 udp0x563cb99ec530 SIP UDP transport started, published address is 10.129.30.123:5060 06:54:36.119 sip_endpoint.c Module "mod-tsx-layer" registered 06:54:36.119 sip_endpoint.c Module "mod-stateful-util" registered 06:54:36.119 sip_endpoint.c Module "mod-ua" registered 06:54:36.120 sip_endpoint.c Module "mod-invite" registered 06:54:36.120 sip_endpoint.c Module "mod-100rel" registered 06:54:36.120 sip_endpoint.c Module "mod-simpleua" registered 06:54:36.120 sip_endpoint.c Module "mod-msg-log" registered 06:54:36.121 pjlib select() I/O Queue created (0x563cb99f5938) 06:54:36.121 simpleua.c Ready to accept incoming calls... 06:54:39.009 sip_endpoint.c Processing incoming message: Request msg INVITE/cseq=102 (rdata0x563cb99edfb8) ... 06:54:39.015 tsx0x563cb9a071d8 ....State changed from Trying to Proceeding, event=TX_MSG 06:54:39.015 dlg0x563cb9a06188 .....Transaction tsx0x563cb9a071d8 state changed to Proceeding 06:54:39.015 simpleua.c ......Call state changed to INCOMING 06:54:39.015 simpleua.c ......Call state changed to EARLY 06:54:39.015 sip_transport.c ..Tx data Response msg 180/INVITE/cseq=102 (tdta0x563cb9a0f978) cloned 06:54:39.015 inv0x563cb9a06188 ..SDP negotiation done, status=0 06:54:39.015 strm0x563cb9a13138 ..VAD temporarily disabled 06:54:39.016 rtp.c ..pjmedia_rtp_session_init: ses=0x563cb9a14490, default_pt=8, ssrc=0x5bd062c2 06:54:39.016 rtp.c ..pjmedia_rtp_session_init: ses=0x563cb9a098f0, default_pt=8, ssrc=0x5bd062c2 simpleua: ../src/pjmedia/event.c:253: pjmedia_event_subscribe: Assertion `mgr' failed. I found solution here: https://trac.pjsip.org/repos/changeset/5942 I downloaded simpleua.c from https://trac.pjsip.org/repos/export/HEAD/pjproject/trunk/pjsip-apps/src/samples/simpleua.c and re-build pjsip. After my actions I get following error when I run simpleua: root@test-vm:~# /usr/src/pjproject-2.8/pjsip-apps/bin/samples/x86_64-unknown-linux-gnu/simpleua 07:10:08.035 os_core_unix.c !pjlib 2.8 for POSIX initialized 07:10:08.036 sip_endpoint.c Creating endpoint instance... 07:10:08.036 pjlib select() I/O Queue created (0x564b41abe990) 07:10:08.036 sip_endpoint.c Module "mod-msg-print" registered 07:10:08.036 sip_transport.c Transport manager created. 07:10:08.037 udp0x564b41ac6530 SIP UDP transport started, published address is 10.129.30.123:5060 07:10:08.038 sip_endpoint.c Module "mod-tsx-layer" registered 07:10:08.038 sip_endpoint.c Module "mod-stateful-util" registered 07:10:08.038 sip_endpoint.c Module "mod-ua" registered 07:10:08.038 sip_endpoint.c Module "mod-invite" registered 07:10:08.038 sip_endpoint.c Module "mod-100rel" registered 07:10:08.039 sip_endpoint.c Module "mod-simpleua" registered 07:10:08.039 sip_endpoint.c Module "mod-msg-log" registered 07:10:08.039 pjlib select() I/O Queue created (0x564b41acf938) Segmentation fault How fix that? BR Ivan