| Neels Hofmeyr | c4628a3 | 2018-12-07 14:47:34 +0100 | [diff] [blame^] | 1 | msc { |
| 2 | hscale=2; |
| 3 | msc1[label="osmo-msc"], mncc1[label="MNCC FSM"], pbx[label="MNCC server (osmo-sip-connector)"], mncc2[label="MNCC FSM"], msc2[label="osmo-msc"]; |
| 4 | |
| 5 | mncc1 note mncc1 [label="The typical progression of an outgoing call, i.e. a call initiated by osmo-msc, as |
| 6 | implemented in mncc_fsm.h, mncc_fsm.c"]; |
| 7 | mncc2 note mncc2 [label="The typical progression of an incoming call, i.e. a call initiated by the PBX, as |
| 8 | implemented in mncc_fsm.h, mncc_fsm.c"]; |
| 9 | |
| 10 | mncc1 abox mncc1 [label="MNCC_ST_NOT_STARTED"]; |
| 11 | msc1 rbox msc1 [label="mncc_outgoing_start()"]; |
| 12 | msc1 -> mncc1 [label="MNCC_EV_OUTGOING_START"]; |
| 13 | |
| 14 | mncc1 abox mncc1 [label="MNCC_ST_OUTGOING_WAIT_PROCEEDING"]; |
| 15 | mncc1 => pbx [label="MNCC_SETUP_IND |
| 16 | \n callref, IMSI, called and calling number"]; |
| 17 | mncc1 <= pbx [label="MNCC_RTP_CREATE |
| 18 | \n callref"]; |
| 19 | mncc1 rbox mncc1 [label="mncc_rx_rtp_create()"]; |
| 20 | mncc1 => pbx [label="MNCC_RTP_CREATE |
| 21 | \n callref, RTP IP address and port"]; |
| 22 | mncc1 <= pbx [label="MNCC_CALL_PROC_REQ |
| 23 | \n callref, RTP IP address and port"]; |
| 24 | mncc1 abox mncc1 [label="MNCC_ST_OUTGOING_WAIT_COMPLETE"]; |
| 25 | |
| 26 | msc2 <= pbx [label="MNCC_SETUP_REQ |
| 27 | \n callref, called and calling number"]; |
| 28 | mncc2 abox mncc2 [label="MNCC_ST_NOT_STARTED"]; |
| 29 | msc2 rbox msc2 [label="mncc_incoming_start()"]; |
| 30 | msc2 -> mncc2 [label="MNCC_EV_INCOMING_START"]; |
| 31 | mncc2 abox mncc2 [label="MNCC_ST_INCOMING_WAIT_COMPLETE"]; |
| 32 | mncc2 => pbx [label="MNCC_CALL_CONF_IND |
| 33 | \n callref, bearer capabilities, cccap and IMSI"]; |
| 34 | mncc2 <= pbx [label="MNCC_RTP_CREATE |
| 35 | \n callref"]; |
| 36 | mncc2 rbox mncc2 [label="mncc_rx_rtp_create()"]; |
| 37 | mncc2 => pbx [label="MNCC_RTP_CREATE |
| 38 | \n callref, RTP IP address and port"]; |
| 39 | mncc2 => pbx [label="MNCC_ALERT_IND |
| 40 | \n callref"]; |
| 41 | |
| 42 | mncc1 <= pbx [label="MNCC_ALERT_REQ |
| 43 | \n callref and progress"]; |
| 44 | |
| 45 | mncc2 => pbx [label="MNCC_SETUP_CNF |
| 46 | \n callref, imsi and connected number"]; |
| 47 | mncc2 <= pbx [label="MNCC_RTP_CONNECT |
| 48 | \n callref, RTP IP and port"]; |
| 49 | mncc2 rbox mncc2 [label="mncc_rx_rtp_connect()"]; |
| 50 | mncc2 <= pbx [label="MNCC_SETUP_COMPL_REQ |
| 51 | \n callref"]; |
| 52 | mncc2 abox mncc2 [label="MNCC_ST_TALKING"]; |
| 53 | |
| 54 | mncc1 <= pbx [label="MNCC_RTP_CONNECT |
| 55 | \n callref, RTP IP and port"]; |
| 56 | mncc1 rbox mncc1 [label="mncc_rx_rtp_connect()"]; |
| 57 | msc1 <- mncc1 [label="rtp_stream_set_remote_addr()"]; |
| 58 | mncc1 <= pbx [label="MNCC_SETUP_RSP |
| 59 | \n callref"]; |
| 60 | mncc1 => pbx [label="MNCC_SETUP_COMPL_IND |
| 61 | \n callref"]; |
| 62 | mncc1 abox mncc1 [label="MNCC_ST_TALKING"]; |
| 63 | |
| 64 | ...; |
| 65 | ... [label="Call goes on for a while..."]; |
| 66 | ...; |
| 67 | |
| 68 | mncc1 rbox mncc1 [label="mncc_release()"]; |
| 69 | mncc1 => pbx [label="MNCC_DISC_IND |
| 70 | \n callref and cause"]; |
| 71 | mncc1 abox mncc1 [label="MNCC_ST_WAIT_RELEASE_ACK"]; |
| 72 | mncc1 <= pbx [label="MNCC_REL_REQ |
| 73 | \n callref and cause"]; |
| 74 | |
| 75 | mncc2 <= pbx [label="MNCC_DISC_REQ |
| 76 | \n callref and cause"]; |
| 77 | mncc2 => pbx [label="MNCC_REL_IND |
| 78 | \n callref and cause"]; |
| 79 | mncc2 abox mncc2 [label="terminated"]; |
| 80 | |
| 81 | mncc1 => pbx [label="MNCC_REL_CNF |
| 82 | \n callref"]; |
| 83 | mncc1 abox mncc1 [label="terminated"]; |
| 84 | } |