Cisco ATA-186 Administration Guide - Page 149
Using rtpcatch to Analyze Common Causes of Failure, Example 7-4, T38 Fax Relay Mode, Cisco Fax Relay
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Chapter 7 Configuring and Debugging Fax Services Debugging the Cisco ATA 186/188 Fax Services [ 136]2.53> Codec G711u/D [ 137]2.53> NSE PT 100, EVT 192: Up-Speed, CED tone Detected [ 140]3.200> Codec G711u/D Analysis • Both sides initially use G.723. • switches to G.711µ-law using a dynamic payload type. • NSE signaling packets are sent from . • switches to G.711µ-law using a dynamic payload type. Example 7-4 T38 Fax Relay Mode ---------- FAX Summary 1 ---------[ 15]3.99> Codec G711u [ 486]2.53> Codec G711u [ 1277]2.53> Codec T38 [ 1278]3.99> Codec T38 Analysis • Both sides initially use G.711µ-law. • Both sides switch to T.38 Example 7-5 Cisco Fax Relay ---------- FAX Summary 1 ---------[ 8]3.99> Codec G711u [ 248]2.53> Codec G711u [ 798]3.99> NSE PT 96, Cisco Fax Relay [ 799]2.53> NSE PT 97, EVT 192: Up-Speed, CED tone Detected [ 800]3.99> NSE PT 97, Cisco Fax Relay ACK [ 801]3.99> Codec C_FxRly [ 803]2.53> NSE PT 96, EVT 192: Up-Speed, CED tone Detected [ 804]3.99> NSE PT 97, Cisco Fax Relay ACK [ 805]2.53> Codec C_FxRly Analysis • Both sides initially use G.711µ-law. • NSE signaling packets are sent between and . • Both sides switch to Cisco fax relay. Using rtpcatch to Analyze Common Causes of Failure The following examples show the rtpcatch output of failed fax sessions. is ATA; is a Cisco gateway. Example 7-6 Cisco ATA Configuration Failure ---------- FAX Summary 1 ---------- OL-3410-01 Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide (SIP) 7-17