ZyXEL Communications omni.net LCD+M Analyzing the Captured Data

Technical Reference for ZyXEL omni.net series

used with the ZyXEL CAPI driver. The ZyXEL CAPI driver communicates with the ISDN TA through this internal interface. It is not recommended that users get involved in this internal interface. The AT commands/responses, on the other hand, are in a standard user interface. An analysis of these commands and responses might prove very informative. All messages captured by the EPA are tagged with a time stamp according to a free running timer that starts at the beginning of data capture. The resolution of this timing information is in 10ms intervals.

The following commands determine the kind of protocol data captured by the (Embedded Protocol Analyzer) EPA:

	EPA-Capture AT Commands			Description
ATCDn			Configuration of embedded protocol analyzer for D-channel.
CD0			Disable the capture of D-channel protocols.
CD1			Enable the capture of D-channel protocols (default).
ATCBn			Configuration of embedded protocol analyzer for B-channel.
CB0			Disable the capture of B-channel protocols (default).
CB1			Enable the capture of B-channel protocols.
		Table 63. EPA-Capture AT Commands (1)
	EPA-Capture			Description
	AT Commands
ATCCn		Configuration of embedded protocol analyzer for DTE-DCE interface protocols.
CC0		Disable the capture of DTE-DCE interface protocols (default).
CC1		Enable the capture of DTE-DCE interface protocols.

Table 64. EPA-Capture AT Commands (2)

The EPA starts to capture data when the command [ATCT] is issued. This capturing process continues until the command [ATC$] is issued. The EPA maintains 8 Kbytes RAM as a ring buffer. In case the buffer is full, the earliest data captured will be overwritten by the latest data.

Analyzing the Captured Data

To view the analyzed result, use the command [ATC$]. For your convenience, the relevant AT

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