asterisk3# ngrep -Tn 60 -Wbyline port 5060 | ./sip-dump.pl 0.000000| 10.251.1.21:5060 > 10.252.15.24:5060 | CSeq: 1 INVITE. > | CMD: INVITE 91 > | 0.000891| 10.251.1.21:5060 < 10.252.15.24:5060 | < CSeq: 1 INVITE. | < RES: 407 Proxy Authentication Required | 0.057737| 10.251.1.21:5060 > 10.252.15.24:5060 | CSeq: 1 ACK. > | CMD: ACK 91 > | 0.104119| 10.251.1.21:5060 > 10.252.15.24:5060 | CSeq: 2 INVITE. > | CMD: INVITE 91 > | 0.104786| 10.251.1.21:5060 < 10.252.15.24:5060 | < CSeq: 2 INVITE. | < RES: 100 Trying | 0.115627| 10.252.15.24:5060 > 10.252.15.25:5060 | CSeq: 102 INVITE. > | CMD: INVITE 91 > | 0.118390| 10.252.15.24:5060 < 10.252.15.25:5060 | < CSeq: 102 INVITE. | < RES: 100 Trying | 0.131776| 10.252.15.25:5060 > 10.252.15.26:5060 | CSeq: 102 INVITE. > | CMD: INVITE 91 > | 0.135561| 10.252.15.25:5060 < 10.252.15.26:5060 | < CSeq: 102 INVITE. | < RES: 100 Trying | 0.148304| 10.252.15.26:5060 > 10.252.11.130:5060 | CSeq: 102 INVITE. > | CMD: INVITE 9096 > | 0.152045| 10.252.15.26:5060 < 10.252.11.130:5060 | < CSeq: 102 INVITE. | < RES: 100 Trying | 0.186216| 10.252.15.26:5060 < 10.252.11.130:5060 | < CSeq: 102 INVITE. | < RES: 180 Ringing | 0.193033| 10.252.15.25:5060 < 10.252.15.26:5060 | < CSeq: 102 INVITE. | < RES: 180 Ringing | 0.198284| 10.252.15.24:5060 < 10.252.15.25:5060 | < CSeq: 102 INVITE. | < RES: 180 Ringing | 0.198372| 10.251.1.21:5060 < 10.252.15.24:5060 | < CSeq: 2 INVITE. | < RES: 180 Ringing | 2.124979| 10.252.15.26:5060 < 10.252.11.130:5060 | < CSeq: 102 INVITE. | < RES: 200 OK | 2.126874| 10.252.15.26:5060 > 10.252.11.130:5060 | CSeq: 102 ACK. > | CMD: ACK 9096 > | 2.133521| 10.252.15.25:5060 < 10.252.15.26:5060 | < CSeq: 102 INVITE. | < RES: 200 OK | 2.136742| 10.252.15.25:5060 > 10.252.15.26:5060 | CSeq: 102 ACK. > | CMD: ACK 91 > | 2.137987| 10.252.15.26:5060 > 10.252.11.130:5060 | CSeq: 103 INVITE. > | CMD: INVITE 9096 > | 2.140880| 10.252.15.26:5060 < 10.252.11.130:5060 | < CSeq: 103 INVITE. | < RES: 100 Trying | 2.141680| 10.252.15.25:5060 < 10.252.15.26:5060 | < CSeq: 102 INVITE. | < CMD: INVITE edwin | 2.143401| 10.252.15.24:5060 < 10.252.15.25:5060 | < CSeq: 102 INVITE. | < RES: 200 OK | 2.144346| 10.252.15.26:5060 < 10.252.11.130:5060 | < CSeq: 103 INVITE. | < RES: 200 OK | 2.145858| 10.252.15.26:5060 > 10.252.11.130:5060 | CSeq: 103 ACK. > | CMD: ACK 9096 > | 2.146866| 10.252.15.24:5060 > 10.252.15.25:5060 | CSeq: 102 ACK. > | CMD: ACK 91 > | 2.149577| 10.251.1.21:5060 < 10.252.15.24:5060 | < CSeq: 2 INVITE. | < RES: 200 OK | 2.150202| 10.252.15.24:5060 > 10.252.15.25:5060 | CSeq: 103 INVITE. > | CMD: INVITE 91 > | 2.150250| 10.252.15.25:5060 > 10.252.15.26:5060 | CSeq: 103 INVITE. > | CMD: INVITE 91 > | 2.151092| 10.252.15.25:5060 < 10.252.15.26:5060 | < CSeq: 103 INVITE. | < RES: 491 Request Pending | 2.151918| 10.252.15.25:5060 > 10.252.15.26:5060 | CSeq: 102 INVITE. > | RES: 491 Request Pending > | 2.152966| 10.252.15.25:5060 < 10.252.15.26:5060 | < CSeq: 102 ACK. | < CMD: ACK edwin | 2.154068| 10.252.15.24:5060 < 10.252.15.25:5060 | < CSeq: 102 INVITE. | < CMD: INVITE edwin | 2.155532| 10.252.15.26:5060 > 10.252.11.130:5060 | CSeq: 104 BYE. > | CMD: BYE 9096 > | 2.155569| 10.252.15.24:5060 < 10.252.15.25:5060 | < CSeq: 103 INVITE. | < RES: 491 Request Pending | 2.156736| 10.252.15.25:5060 > 10.252.15.26:5060 | CSeq: 103 ACK. > | CMD: ACK 91 > | 2.158195| 10.252.15.25:5060 > 10.252.15.26:5060 | CSeq: 104 BYE. > | CMD: BYE 91 > | 2.158216| 10.252.15.25:5060 < 10.252.15.26:5060 | < CSeq: 103 BYE. | < CMD: BYE edwin | 2.162461| 10.252.15.25:5060 < 10.252.15.26:5060 | < CSeq: 104 BYE. | < RES: 200 OK | 2.165199| 10.252.15.24:5060 > 10.252.15.25:5060 | CSeq: 102 INVITE. > | RES: 491 Request Pending > | 2.165652| 10.252.15.24:5060 > 10.252.15.25:5060 | CSeq: 103 ACK. > | CMD: ACK 91 > | 2.166071| 10.252.15.24:5060 > 10.252.15.25:5060 | CSeq: 104 BYE. > | CMD: BYE 91 > | 2.166764| 10.252.15.25:5060 > 10.252.15.26:5060 | CSeq: 103 BYE. > | RES: 200 OK > | 2.167381| 10.252.15.24:5060 < 10.252.15.25:5060 | < CSeq: 102 ACK. | < CMD: ACK edwin | 2.168456| 10.252.15.26:5060 < 10.252.11.130:5060 | < CSeq: 104 BYE. | < RES: 200 OK | 2.168995| 10.252.15.24:5060 < 10.252.15.25:5060 | < CSeq: 104 BYE. | < RES: 481 Call leg/transaction does not exist | 2.300856| 10.251.1.21:5060 > 10.252.15.24:5060 | CSeq: 2 ACK. > | CMD: ACK 91 > | 2.301192| 10.251.1.21:5060 < 10.252.15.24:5060 | < CSeq: 102 BYE. | < CMD: BYE edwin |