Cisco ATA186-I1 Administrator's Manual page 120

Debugging the Cisco ATA 186/188 Fax Services
As prserv receives debug information from the Cisco ATA, it displays the information on the DOS screen
and saves it to the output file <port>.log.
Once you are finished capturing debug information, you can stop prserv by entering Ctrl-C at the DOS
prompt. If you restart the process without changing the name of the log file, any new debug information
is appended to the end of the original file.
Analyzing prserv Output for Fax Sessions
The debug log obtained from prserv is for detecting simple configuration problems.
A comprehensive understanding of the fax events requires the use of the rtpcatch tool (see the
Note
rtpcatch for Diagnosing Fax Problems" section on page
Table 6-2
Table 6-2
Log event
[ch] Enable encoder <pt>
[ch] DPKT 1st:
<timestamp1>
<timestamp2>, pt <pt>
[ch] codec: <pt1> => <pt2> Voice codec switchover occurred. The voice encoder type switched
[ch] Rx MPT PT=<NSEpt>
NSE pkt <event>
[ch] Tx MPT PT=<pt> NSE
pkt <event>
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide for SCCP (version 3.0)
6-10
lists log events relevant to analyzing a fax session.
Debug Log Examples
Description
Voice encoder type pt is enabled for the channel ch, where pt can be 0
for G.711µ-law, 4 for G.723.1, 8 for G.711A-law, and 18 for G.729.
For example,
transmitted G.723.1-encoded voice packets.
The first voice packet that the Cisco ATA received was of RTP payload
type pt for the channel ch with timestamp of timestamp1, and the local
decoding timestamp was set to timestamp2.
For example,
that the first RTP packet that the Cisco ATA received was
G.723.1-encoded for channel 0.
from pt1 to pt2 for the channel ch.
For example,
on the Cisco ATA switched from G.723.1 to G.711µ-law.
Channel ch received an NSE packet of event with payload type of
NSEpt. For event, c0XXXXXX indicates a CED tone event, and
c1XXXXXX indicates a phase reversal event.
For example,
Cisco ATA received a CED tone event NSE packet with payload type of
100.
Channel ch transmitted an NSE packet of event with payload type of
NSEpt. For event, c0XXXXXX indicates a CED tone event, and
c1XXXXXX indicates a phase reversal event.
For example,
ATA transmitted a CED tone event NSE packet with payload type of
100.
Chapter 6 Configuring and Debugging Fax Services
6-12).
indicates that the Cisco ATA
[0]Enable encoder 4
[0]DPKT 1st: 1491513359 1491512639, pt 4
indicates that the local voice encoder
[0]codec: 4 => 0
[0]Rx MPT PT=100 NSE pkt c0000000
[0]Tx MPT PT=100 NSE pkt c0000000
"Using
indicates
indicates that the
indicates that the
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