Rtp Statistics - Epygi Quadro2x Administrator's Manual

Quadro Baseline
Calling Phone and Called Phone respectively require the caller and called party's SIP address (see chapter
extension or PSTN number as search criteria. Wildcard symbols are allowed here.
The Call Statistics: Successful Calls, Missed Calls and NonSuccessful Calls tables are lists of successful, missed and unsuccessful incoming
and outgoing calls and their parameters (Call Start Time, Call Duration, Call destinations). Each column heading in the tables is a link. By clicking on
the column heading, the table will be sorted by the selected column. When sorting (ascending or descending), arrows will be displayed next to the
column heading.
The Network Details column is only present in the Successful Calls table and provides brief information about the call quality and codecs used to
receive and transmit packets. Clicking on the successful call details will open the
established call is provided. The Call Detail column is present only in the Non Successful Calls table and indicates the reason why the call was
unsuccessful.
Filter performs a search procedure by the selected criteria. The search may be done with several criteria at the same time.
To Enable/Disable the Statistics
1. Enter the Call Statistics Settings page.
2. Select or deselect the Enable Call Reporting checkbox to enable or disable statistics recording.
3. If enabling the statistics, the maximum number of records to be stored in the statistics table should be selected from the corresponding drop
down lists.
4. Press Save to apply the new configuration.
To Filter the Statistics
1. Enter the desired criteria fields.
2. Press the Filter button to search the call reports within the Call Statistics table.
Please Note: To return to the complete Statistics Table, clear all search criteria and press Filter.
To Reset the Statistics
1. Press the Clear All Records button in the Call Statistics Settings page.
2. Confirm the deletion by clicking on Yes. The call statistics will then be deleted. To abort the deletion and keep the statistics information, click on
No.

RTP Statistics

The RTP Statistics page provides detailed information about the
established call is provided.
Quality - estimated call quality, which depends on RTP statistic.
Below is the legend for Call Quality definitions on the displayed RTP
Statistics:
excellent – RX Lost Packets < 1% & RX Jitter < 20
good - RX Lost Packets < 5% & RX Jitter < 80
satisfactory - RX Lost Packets < 10% & RX Jitter < 150
bad - RX Lost Packets < 20% & RX Jitter < 200
very bad - RX Lost Packets > 20% or RX Jitter > 200
Rx/Tx Codec - codec for received and transmitted RTP stream respectively.
Rx/Tx Packets - number of RTP packets received and transmitted respectively.
Rx/Tx Packet Size - size of RTP packet (payload) received and transmitted respectively.
Rx Lost Packets - number of lost RTP packets for received stream.
Rx Jitter - inter-arrival jitter is an estimate of the statistical variance of the RTP data packet inter-arrival time, measured in timestamp units.
The inter-arrival jitter is defined to be the mean deviation (smoothed absolute value) of the difference D in packet spacing at the receiver compared
to the sender for a pair of packets. If Si is the RTP timestamp from packet i, and Ri is the time of arrival in RTP timestamp units for packet i, then for
two packets i and j, D may be expressed as:
D(i,j) = (Rj - Ri) - (Sj - Si) = (Rj - Sj) - (Ri - Si)
J(i) = J(i-1) + (|D(i-1,i)| - J(i-1))/16, where J(i) is Rx Jitter for packet i.
For more details about Jitter calculations, please refer to the RFC1889.
Rx Maximum Delay - maximum variance (absolute value) of actual arrival time of the RTP data packet compared to estimated arrival time,
measured in milliseconds.
Quadro2x, Quadro2xi; SW Version 4.0.x
Quadro2x Manual II: Administrator's Guide – Administrator's Graphical User Interface
E ntering a SIP Addresses
2 9 2 H
R TP Statistics
page where detailed information about the
2 9 3 H
correctly),
Fig. II-95: RTP Statistics page
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