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DSI SS7MD Programmer’s Manual Issue 3
6.8.4 DVR_MSG_R_L1_STATS – Link Statistics Request
Synopsis
Retrieve link statistics.
Format
Description
This message provides the user with a number of statistics on a per link basis. If the user sends the message
with a non zero status field, the statistics are reset to 0 after being read.
Parameters
The DVR_MSG_R_L1_STATS message includes the following parameters:
• duration
Duration in tenths of a second since the statistic counters were last reset.
• about_cnt
The number of aborts received on the link.
• CRC_errs
Number of CRC errors received on the link.
• length_errs
The number of received frames that were designated as either too long or too short for a configured
protocol.
• rx_overrun
The number of times that the receiver was forced to discard incoming frames as a result of there being
no internal buffers available to receive the incoming data. This is a count of the number of events rather
than a count of the number of frames discarded.
MESSAGE HEADER
Field Name Meaning
type DVR_MSG_R_L1_STATS (0x6136)
id l1_llid
src Sending module ID
dst module ID of onboard HDLC/SS7 driver
rsp_req Used to request a confirmation, sending layer’s bit must be set.
hclass 0
status
0 – Read statistics
1 – Read statistics and reset
err_info 0
len 48
PARAMETER AREA
Offset Size Name
0 4 duration
4 4 abort_cnt
8 4 CRC_errs
12 4 Reserved. Must be set to 0.
16 4 length_errs
20 4 rx_overrun
24 4 receiver_busy_cnt
28 4 rx_frame_cnt
32 4 rx_pre_filter_cnt
36 4 tx_frame_cnt
40 4 Reserved. Must be set to 0.
44 4 rx_busy_status