Thanks for the advice.
I have made a debug log and greped it with regex “(pjsip_t38)|(pjsip_session)” to fit here, hopefully with enough info.
[root@freepbx ~]# less ~/full | grep -P "(pjsip_t38)|(pjsip_session)"
DEBUG[1586] res_pjsip_session.c: Method is INVITE, Response is 100 Trying
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764()'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[1586] res_pjsip_session.c: There is no transaction involved in this state change
DEBUG[1586] res_pjsip_session.c: The current inv state is INCOMING
DEBUG[1586] res_pjsip_session.c: Source of transaction state change is TX_MSG
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764()'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Proceeding
DEBUG[1586] res_pjsip_session.c: The transaction state change event is TX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is INCOMING
DEBUG[1586] res_pjsip_session.c: Negotiating incoming SDP media stream 'audio' using audio SDP handler
DEBUG[1586] res_pjsip_session.c: Media stream 'audio' handled by audio
DEBUG[1586] res_pjsip_session.c: Method is INVITE
DEBUG[3550] res_pjsip_session.c: Method is INVITE, Response is 180 Ringing
DEBUG[3550] res_pjsip_session.c: Function session_inv_on_state_changed called on event TSX_STATE
DEBUG[3550] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[3550] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[3550] res_pjsip_session.c: There is no transaction involved in this state change
DEBUG[3550] res_pjsip_session.c: The current inv state is EARLY
DEBUG[3550] res_pjsip_session.c: Source of transaction state change is TX_MSG
DEBUG[3550] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[3550] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[3550] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[3550] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[3550] res_pjsip_session.c: The current transaction state is Proceeding
DEBUG[3550] res_pjsip_session.c: The transaction state change event is TX_MSG
DEBUG[3550] res_pjsip_session.c: The current inv state is EARLY
DEBUG[1586] res_pjsip_session.c: Method is INVITE
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: There is no transaction involved in this state change
DEBUG[1586] res_pjsip_session.c: The current inv state is CALLING
DEBUG[1586] res_pjsip_session.c: Source of transaction state change is TX_MSG
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: The UAC INVITE transaction involved in this state change is 0x7f204803bf78
DEBUG[1586] res_pjsip_session.c: The current transaction state is Calling
DEBUG[1586] res_pjsip_session.c: The transaction state change event is TX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CALLING
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: The UAC INVITE transaction involved in this state change is 0x7f204803bf78
DEBUG[1586] res_pjsip_session.c: The current transaction state is Proceeding
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CALLING
DEBUG[1586] res_pjsip_session.c: Received response
DEBUG[1586] res_pjsip_session.c: Response is 100 Trying
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: There is no transaction involved in this state change
DEBUG[1586] res_pjsip_session.c: The current inv state is EARLY
DEBUG[1586] res_pjsip_session.c: Source of transaction state change is RX_MSG
DEBUG[1586] res_pjsip_session.c: Received response
DEBUG[1586] res_pjsip_session.c: Response is 180 Ringing
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: The UAC PRACK transaction involved in this state change is 0x7f204801b848
DEBUG[1586] res_pjsip_session.c: The current transaction state is Calling
DEBUG[1586] res_pjsip_session.c: The transaction state change event is TX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is EARLY
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: The UAC INVITE transaction involved in this state change is 0x7f204803bf78
DEBUG[1586] res_pjsip_session.c: The current transaction state is Proceeding
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is EARLY
DEBUG[1586] res_pjsip_session.c: Received response
DEBUG[1586] res_pjsip_session.c: Response is 180 Ringing
DEBUG[1586] res_pjsip_session.c: Method is INVITE, Response is 180 Ringing
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[1586] res_pjsip_session.c: There is no transaction involved in this state change
DEBUG[1586] res_pjsip_session.c: The current inv state is EARLY
DEBUG[1586] res_pjsip_session.c: Source of transaction state change is TX_MSG
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Proceeding
DEBUG[1586] res_pjsip_session.c: The transaction state change event is TX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is EARLY
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: The UAC PRACK transaction involved in this state change is 0x7f204801b848
DEBUG[1586] res_pjsip_session.c: The current transaction state is Completed
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is EARLY
DEBUG[1586] res_pjsip_session.c: Received response
DEBUG[1586] res_pjsip_session.c: Response is 200 OK
DEBUG[1586] res_pjsip_session.c: PRACK received final response code 200
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: There is no transaction involved in this state change
DEBUG[1586] res_pjsip_session.c: The current inv state is CONNECTING
DEBUG[1586] res_pjsip_session.c: Source of transaction state change is RX_MSG
DEBUG[1586] res_pjsip_session.c: Received response
DEBUG[1586] res_pjsip_session.c: Response is 200 OK
DEBUG[1586] res_pjsip_session.c: Applying negotiated SDP media stream 'audio' using audio SDP handler
DEBUG[1586] res_pjsip_session.c: Applied negotiated SDP media stream 'audio' using audio SDP handler
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_state_changed called on event TX_MSG
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: There is no transaction involved in this state change
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session does NOT have an invite_tsx
DEBUG[1586] res_pjsip_session.c: The UAC INVITE transaction involved in this state change is 0x7f204803bf78
DEBUG[1586] res_pjsip_session.c: The current transaction state is Terminated
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Received response
DEBUG[1586] res_pjsip_session.c: Response is 200 OK
DEBUG[1586] res_pjsip_session.c: Applying negotiated SDP media stream 'audio' using audio SDP handler
DEBUG[1586] res_pjsip_session.c: Applied negotiated SDP media stream 'audio' using audio SDP handler
DEBUG[1586] res_pjsip_session.c: Method is INVITE, Response is 200 OK
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[1586] res_pjsip_session.c: There is no transaction involved in this state change
DEBUG[1586] res_pjsip_session.c: The current inv state is CONNECTING
DEBUG[1586] res_pjsip_session.c: Source of transaction state change is TX_MSG
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Completed
DEBUG[1586] res_pjsip_session.c: The transaction state change event is TX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONNECTING
DEBUG[1586] res_pjsip_session.c: Delay sending reinvite to 764 because of outstanding transaction...
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session does NOT have an invite_tsx
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Terminated
DEBUG[1586] res_pjsip_session.c: The transaction state change event is USER
DEBUG[1586] res_pjsip_session.c: The current inv state is CONNECTING
DEBUG[1586] res_pjsip_session.c: Endpoint '764(PJSIP/764-00000006)' INVITE delay check. tsx-state:Terminated
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_state_changed called on event RX_MSG
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session does NOT have an invite_tsx
DEBUG[1586] res_pjsip_session.c: There is no transaction involved in this state change
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Received request
DEBUG[1586] res_pjsip_session.c: Method is ACK
DEBUG[1586] res_pjsip_session.c: Endpoint '764(PJSIP/764-00000006)' sending delayed INVITE request.
DEBUG[1586] res_pjsip_session.c: Sending session refresh SDP via re-INVITE to 764
DEBUG[1586] res_pjsip_session.c: Method is INVITE
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: The UAC INVITE transaction involved in this state change is 0x7f204803bf78
DEBUG[1586] res_pjsip_session.c: The current transaction state is Calling
DEBUG[1586] res_pjsip_session.c: The transaction state change event is TX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: The UAC INVITE transaction involved in this state change is 0x7f204803bf78
DEBUG[1586] res_pjsip_session.c: The current transaction state is Proceeding
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Received response
DEBUG[1586] res_pjsip_session.c: Response is 100 Trying
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Completed
DEBUG[1586] res_pjsip_session.c: The transaction state change event is TX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f204803bf78)
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Completed
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Received request
DEBUG[1586] res_pjsip_session.c: Method is INVITE
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session does NOT have an invite_tsx
DEBUG[1586] res_pjsip_session.c: The UAC INVITE transaction involved in this state change is 0x7f204803bf78
DEBUG[1586] res_pjsip_session.c: The current transaction state is Completed
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Received response
DEBUG[1586] res_pjsip_session.c: Response is 491 Request Pending
DEBUG[1586] res_pjsip_session.c: Endpoint '764(PJSIP/764-00000006)' re-INVITE collision.
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session does NOT have an invite_tsx
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Confirmed
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Received request
DEBUG[1586] res_pjsip_session.c: Method is ACK
DEBUG[1586] res_pjsip_t38.c: UDPTL initialized on session for PJSIP/765-00000007
DEBUG[1586] res_pjsip_t38.c: T.38 state changed to '2' from '0' on channel 'PJSIP/765-00000007'
DEBUG[1586] res_pjsip_t38.c: Deferring incoming SDP stream on PJSIP/765-00000007 for peer re-invite
DEBUG[1586] res_pjsip_t38.c: UDPTL initialized on session for PJSIP/764-00000006
DEBUG[1586] res_pjsip_t38.c: T.38 state changed to '1' from '0' on channel 'PJSIP/764-00000006'
DEBUG[1586] res_pjsip_session.c: Sending session refresh SDP via re-INVITE to 764
DEBUG[1586] res_pjsip_session.c: Method is INVITE
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048045b28)
DEBUG[1586] res_pjsip_session.c: The UAC INVITE transaction involved in this state change is 0x7f2048045b28
DEBUG[1586] res_pjsip_session.c: The current transaction state is Calling
DEBUG[1586] res_pjsip_session.c: The transaction state change event is TX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048045b28)
DEBUG[1586] res_pjsip_session.c: The UAC INVITE transaction involved in this state change is 0x7f2048045b28
DEBUG[1586] res_pjsip_session.c: The current transaction state is Proceeding
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Received response
DEBUG[1586] res_pjsip_session.c: Response is 100 Trying
DEBUG[1586] res_pjsip_session.c: Endpoint '764(PJSIP/764-00000006)' INVITE delay check. tsx-state:Proceeding
DEBUG[1585] res_pjsip_session.c: Endpoint '764(PJSIP/764-00000006)' re-INVITE collision timer expired.
DEBUG[1585] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1585] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1585] res_pjsip_session.c: The inv session does NOT have an invite_tsx
DEBUG[1585] res_pjsip_session.c: The UAC PRACK transaction involved in this state change is 0x7f204801b848
DEBUG[1585] res_pjsip_session.c: The current transaction state is Terminated
DEBUG[1585] res_pjsip_session.c: The transaction state change event is TIMER
DEBUG[1585] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1585] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1585] res_pjsip_session.c: The state change pertains to the endpoint '764(PJSIP/764-00000006)'
DEBUG[1585] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048045b28)
DEBUG[1585] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1585] res_pjsip_session.c: The current transaction state is Terminated
DEBUG[1585] res_pjsip_session.c: The transaction state change event is TIMER
DEBUG[1585] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1585] res_pjsip_session.c: Endpoint '764(PJSIP/764-00000006)' INVITE delay check. tsx-state:Terminated
DEBUG[1586] res_pjsip_session.c: Endpoint '764(PJSIP/764-00000006)' sending delayed INVITE request.
DEBUG[1586] res_pjsip_session.c: Delay sending reinvite to 764 because of outstanding transaction...
DEBUG[1586] res_pjsip_t38.c: Automatically rejecting T.38 request on channel 'PJSIP/765-00000007'
DEBUG[1586] res_pjsip_t38.c: T.38 state changed to '4' from '2' on channel 'PJSIP/765-00000007'
DEBUG[1586] res_pjsip_session.c: Negotiating incoming SDP media stream 'image' using image SDP handler
DEBUG[1586] res_pjsip_t38.c: Declining; T.38 state is rejected or declined
DEBUG[1586] res_pjsip_t38.c: T.38 state changed to '0' from '4' on channel 'PJSIP/765-00000007'
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Completed
DEBUG[1586] res_pjsip_session.c: The transaction state change event is TX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Completed
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Received request
DEBUG[1586] res_pjsip_session.c: Method is INVITE
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Confirmed
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Received request
DEBUG[1586] res_pjsip_session.c: Method is ACK
DEBUG[1586] res_pjsip_t38.c: T.38 state changed to '2' from '0' on channel 'PJSIP/765-00000007'
DEBUG[1586] res_pjsip_t38.c: Deferring incoming SDP stream on PJSIP/765-00000007 for peer re-invite
DEBUG[1586] res_pjsip_t38.c: UDPTL initialized on session for PJSIP/764-00000006
DEBUG[1586] res_pjsip_session.c: Delay sending reinvite to 764 because of outstanding transaction...
DEBUG[1585] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1585] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1585] res_pjsip_session.c: The inv session does NOT have an invite_tsx
DEBUG[1585] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1585] res_pjsip_session.c: The current transaction state is Terminated
DEBUG[1585] res_pjsip_session.c: The transaction state change event is TIMER
DEBUG[1585] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_t38.c: Automatically rejecting T.38 request on channel 'PJSIP/765-00000007'
DEBUG[1586] res_pjsip_t38.c: T.38 state changed to '4' from '2' on channel 'PJSIP/765-00000007'
DEBUG[1586] res_pjsip_session.c: Negotiating incoming SDP media stream 'image' using image SDP handler
DEBUG[1586] res_pjsip_t38.c: Declining; T.38 state is rejected or declined
DEBUG[1586] res_pjsip_t38.c: T.38 state changed to '0' from '4' on channel 'PJSIP/765-00000007'
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Completed
DEBUG[1586] res_pjsip_session.c: The transaction state change event is TX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Completed
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Received request
DEBUG[1586] res_pjsip_session.c: Method is INVITE
DEBUG[1586] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1586] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1586] res_pjsip_session.c: The inv session still has an invite_tsx (0x7f2048077df8)
DEBUG[1586] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1586] res_pjsip_session.c: The current transaction state is Confirmed
DEBUG[1586] res_pjsip_session.c: The transaction state change event is RX_MSG
DEBUG[1586] res_pjsip_session.c: The current inv state is CONFIRMED
DEBUG[1586] res_pjsip_session.c: Received request
DEBUG[1586] res_pjsip_session.c: Method is ACK
DEBUG[1585] res_pjsip_session.c: Function session_inv_on_tsx_state_changed called on event TSX_STATE
DEBUG[1585] res_pjsip_session.c: The state change pertains to the endpoint '765(PJSIP/765-00000007)'
DEBUG[1585] res_pjsip_session.c: The inv session does NOT have an invite_tsx
DEBUG[1585] res_pjsip_session.c: The UAS INVITE transaction involved in this state change is 0x7f2048077df8
DEBUG[1585] res_pjsip_session.c: The current transaction state is Terminated
DEBUG[1585] res_pjsip_session.c: The transaction state change event is TIMER
DEBUG[1585] res_pjsip_session.c: The current inv state is CONFIRMED