Cisco Systems ATA 188, ATA 186 manual FAX Summary, 6-15

Chapter 6 Configuring and Debugging Fax Services

Debugging the Cisco ATA 186/188 Fax Services

[	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

This indicates that the audio streams originating at <2.213> and <2.216> are G.723-compressed. The audio stream from <2.116> 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 <2.113> 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:

–beginning of new audio codec

–silence packets

–lost packets

–erased packets (as in G.729)

The NSE events reported by rtpcatch include:

–event 32, Fax Mode, CED tone Detected (RFC2833)

–event 34, Modem Mode, ANSam tone Detected (RFC2833)

–event 192, Up-Speed, CED tone Detected

–event 193, ECAN OFF, Phase Reversal Detected

–event 194, ECAN ON, Silence Detected

–event 200, T38 Fax Mode, V.21 Detected

–event 201, T38 Fax Mode ACK

–event 202, T38 Fax Mode NACK

–event 203, Modem Relay Mode, CM Tone Detected

–event Cisco Fax Relay (with RTP payload type 96)

–event Cisco Fax Relay ACK (with RTP payload type 97)

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SCCP)

Ol-3141-01 6-15