Cisco ATA188-I2-A Administration Guide - Page 167
Explanation, rtpcatch
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Chapter 7 Configuring and Debugging Fax Services Debugging the Cisco ATA 186/188 Fax Services Explanation OL-4804-01 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. Summary Input file: faxpassthru.cap : (G723) 2.213:10000 => 2.116:10002 total 38 pkts(70 frames), lost 0 pkts, fill 7 silence pkts This indicates that the input filename is faxpassthru.cap. The output file 00.723 contains the G.723-compressed stream from to ; 38 packets (70 frames) were processed by rtpcatch. No lost packets were detected and seven silence packets were found. 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 This indicates that the audio streams originating at and are G.723-compressed. The audio stream from was then up-sped to G.711µ-law at packet number 101. The NSE signaling packets were sent at packet number 102, 103 and 105. Finally, the audio stream from was up-sped to G.711µ-law. 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 This summarizes the fax events for each path. The audio stream events reported by rtpcatch include: Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide for H.323 (version 3.0) 7-15