Cisco ATA-186 Administration Guide - Page 146

Explanation, rtpcatch

Page 146 highlights

Debugging the Cisco ATA 186/188 Fax Services Chapter 7 Configuring and Debugging Fax Services Explanation Input file: faxpassthru.cap : (G723) 2.213:10000 => 2.116:10002 total 38 pkts(70 frames), lost 0 pkts, fill 7 silence pkts : (G723) 2.116:10002 => 2.213:10000 total 38 pkts(76 frames), lost 0 pkts, fill 0 silence pkts : (G711u) 2.116:10002 => 2.213:10000 total 2181 pkts(2181 frames), lost 2 pkts, fill 0 silence pkts : (G711u) 2.213:10000 => 2.116:10002 total 2179 pkts(2179 frames), lost 0 pkts, fill 1 silence pkts ---------- FAX Summary 1 ---------- [ 25]2.116> Codec G723 [ 26]2.213> Codec G723 [ 101]2.213> Codec G711u/D [ 102]2.213> NSE PT 100, EVT 192: Up-Speed, CED tone Detected [ 103]2.213> NSE PT 100, EVT 193: ECAN OFF, Phase Reversal Detected [ 105]2.116> NSE PT 100, EVT 192: Up-Speed, CED tone Detected [ 107]2.116> Codec G711u/D ---------- FAX Summary 2 ---------- PATH: 2.213:10000 => 2.116:10002 [ 25]Codec G723 [ 105]NSE PT 100, EVT 192: Up-Speed, CED tone Detected [ 107]Codec G711u/D PATH: 2.116:10002 => 2.213:10000 [ 26]Codec G723 [ 101]Codec G711u/D [ 102]NSE PT 100, EVT 192: Up-Speed, CED tone Detected [ 103]NSE PT 100, EVT 193: ECAN OFF, Phase Reversal Detected The output is printed on screen and saved in the file file.sum. The following lines are described: • [ 25]open file: 00.723, (G723) 2.213:10000 => 2.116:10002 This indicates that rtpcatch reached NAI Sniffer packet number 25 and opened a new file named 00.723 to store an audio stream consisting of G.723-compressed data. The audio path originates from the IP address ending with 2.213 and port 10000 (written as ) and terminates at the IP address ending with 2.116 and port 10002. • [ 29] 1 silence pkts from TS 1760 (seq# 3) This indicates that rtpcatch detected one silence RTP packet in the audio path and the silence packet began at timestamp 1760. This occurred at packet number 29 with the RTP sequence number 3. • [ 106] 2 lost pkts from seq# 39 This indicates that rtpcatch detected two lost RTP packets in the audio path . The missing packets began with sequence number 39. This occurred at packet number 106. 7-14 Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide (SIP) OL-3410-01

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7-14
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SIP)
OL-3410-01
Chapter 7
Configuring and Debugging Fax Services
Debugging the Cisco ATA 186/188 Fax Services
Input file: faxpassthru.cap
<00.723>: (G723) 2.213:10000 => 2.116:10002
total 38 pkts(70 frames), lost 0 pkts, fill 7 silence pkts
<01.723>: (G723) 2.116:10002 => 2.213:10000
total 38 pkts(76 frames), lost 0 pkts, fill 0 silence pkts
<02.pcm>: (G711u) 2.116:10002 => 2.213:10000
total 2181 pkts(2181 frames), lost 2 pkts, fill 0 silence pkts
<03.pcm>: (G711u) 2.213:10000 => 2.116:10002
total 2179 pkts(2179 frames), lost 0 pkts, fill 1 silence pkts
---------- FAX Summary 1 ----------
[
25]<2.213=>2.116> Codec G723
[
26]<2.116=>2.213> Codec G723
[
101]<2.116=>2.213> Codec G711u/D
[
102]<2.116=>2.213> NSE PT 100, EVT 192: Up-Speed, CED tone Detected
[
103]<2.116=>2.213> NSE PT 100, EVT 193: ECAN OFF, Phase Reversal Detected
[
105]<2.213=>2.116> NSE PT 100, EVT 192: Up-Speed, CED tone Detected
[
107]<2.213=>2.116> Codec G711u/D
---------- FAX Summary 2 ----------
PATH: 2.213:10000 => 2.116:10002
[
25]Codec G723
[
105]NSE PT 100, EVT 192: Up-Speed, CED tone Detected
[
107]Codec G711u/D
PATH: 2.116:10002 => 2.213:10000
[
26]Codec G723
[
101]Codec G711u/D
[
102]NSE PT 100, EVT 192: Up-Speed, CED tone Detected
[
103]NSE PT 100, EVT 193: ECAN OFF, Phase Reversal Detected
Explanation
The output is printed on screen and saved in the file file.sum.
The following lines are described:
[
25]open file: 00.723, (G723) 2.213:10000 => 2.116:10002
This indicates that
rtpcatch
reached NAI Sniffer packet number 25 and opened a new file named
00.723 to store an audio stream consisting of G.723-compressed data. The audio path originates
from the IP address ending with 2.213 and port 10000 (written as <2.213:1000>) and terminates at
the IP address ending with 2.116 and port 10002.
[
29] <00>
1 silence pkts from TS 1760 (seq# 3)
This indicates that
rtpcatch
detected one silence RTP packet in the audio path <00> and the silence
packet began at timestamp 1760. This occurred at packet number 29 with the RTP sequence number
3.
[
106] <02>
2
lost pkts from seq# 39
This indicates that
rtpcatch
detected two lost RTP packets in the audio path <02>.
The missing
packets began with sequence number 39. This occurred at packet number 106.