Tdm Capture - Dialogic DMG1000 User Manual

Diagnostics
Important points to remember about Network Capture are:
• Downloading does not require any special software, but viewing requires Ethereal.
• On the Network Capture Web page, checking a protocol type causes it NOT to be captured.
• After selecting protocol filters, be sure to click Apply Filters.
• Size of the log is determined at startup. DMG1000 ~1.1 Mbytes, DMG2000 ~24 Mbytes.
Downloading the Network Capture clears the log and starts another.
•
• Stopping the log and restarting it does not clear the log, new data is just appended.
9.4.4

TDM Capture

The TDM Capture creates an in-memory log of voice traffic on the DMG2000's T1 or E1 line. The
capture is controlled from the DMG2000's Web interface, as shown in Figure 62. You can log voice
traffic from a single channel in either the Rx direction, or the Rx and Tx direction, where Rx is
defined as entering the DMG2000 and Tx as leaving the DMG2000. The TDM Capture is not
supported by the DMG1000.
Figure 62. TDM Capture Control Web Page
9.4.4.1 TDM Capture Details
Figure 62 shows the default values (i.e. immediately after power-up) for the TDM Capture. You
can select any one channel for logging. The range of channels is dependent on the TDM
configuration (T1 or E1) and the number of hardware spans. Table 10 shows the mapping from a
protocol and span to the TDM Capture channel numbers.
Table 10. Mapping of Protocol and Span Numbers to TDM Capture Channel Numbers
T1 CAS
T1 QSIG
T1 NI-2
E1 QSIG
220
Span 1
1 to 24 25 to 48
1 to 23 24 to 46
1 to 23 24 to 46
1 to 30 31 to 60
®
Dialogic 1000 and 2000 Media Gateway Series User's Guide — September 2007
Span 2 Span 3
49 to 72
47 to 69
47 to 69
61 to 90
Span 4
73 to 96
70 to 92
70 to 92
91 to 120
Dialogic Corporation