Cisco ATA186-I1 Administrator's Manual page 127

Chapter 6 Configuring and Debugging Fax Services
Example 6-2
---------- 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
Analysis
Both sides initially use G.723.
•
<2.116> switches to G.711µ-law using a dynamic payload type.
•
NSE signaling packets are sent from <2.116>.
•
• An optional NE signaling packet is sent from <2.213>.
• <2.113> switches to G.711µ-law using a dynamic payload type.
EVT 193 may not appear for some fax transmission.
Note
Example 6-3
---------- FAX Summary 1 ----------
[ 37]<3.200=>2.53> Codec G723
[ 41]<2.53=>3.200> Codec G723
[ 136]<3.200=>2.53> Codec G711u/D
[ 137]<3.200=>2.53> NSE PT 100, EVT 192: Up-Speed, CED tone Detected
[ 140]<2.53=>3.200> Codec G711u/D
Analysis
Both sides initially use G.723.
•
<3.200> switches to G.711µ-law using a dynamic payload type.
•
NSE signaling packets are sent from <3.200>.
•
<2.53> switches to G.711µ-law using a dynamic payload type.
•
Example 6-4
---------- FAX Summary 1 ----------
[ 15]<2.53=>3.99> Codec G711u
[ 486]<3.99=>2.53> Codec G711u
[ 1277]<3.99=>2.53> Codec T38
[ 1278]<2.53=>3.99> Codec T38
Analysis
• Both sides initially use G.711µ-law.
Both sides switch to T.38
•
OL-4652-01
Fax Pass-through Mode
Fax Pass-through Mode
T38 Fax Relay Mode
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide for SCCP (version 3.0)
Debugging the Cisco ATA 186/188 Fax Services
6-17