A31003-D3000-M100-02-76A9, 11-2013
OpenScape Desk Phone IP V3R3, Phone Administration, Administrator Documentation
291
Administration
Diagnostics
A QoS report contains the following data:
•
Start of report period - seconds
: NTP time in seconds for the start of the
report period.
•
Start of report period - fraction of seconds
: Additional split seconds to be
added to the seconds for an exact start time.
•
End of report period - seconds
: NTP time in seconds for the end of the
report period.
•
End of report period - fraction of seconds
: Additional split seconds to be
added to the seconds for an exact end time.
•
SNMP specific trap type
: The trap type is a 5 bit value calculated from a list
of threshold-exceeding bits. Every time a threshold is exceeded, the
associated bit is set, otherwise it is cleared.
The trace type bits are defined as follows:
–
Bit 0: Jitter threshold was exceeded.
–
Bit 1: Delay threshold was exceeded.
–
Bit 2: Threshold for lost packets was exceeded.
–
Bit 3: Threshold for consecutive lost packets was exceeded.
–
Bit 4: Threshold for consecutive good packets was exceeded.
•
IP address (local)
: IP address of the local phone.
•
Port number (local)
: RTP receiving port of the local phone.
•
IP address (remote)
: IP address of the remote phone that took part in the
session.
•
Port number (remote)
: RTP sending port of the local phone.
•
SSRC (receiving)
: RTP Source Synchronization Identifier of the local phone.
•
SSRC (sending)
: RTP Source Synchronization Identifier of the remote
phone.
•
Codec
: Number of the Payload Type applied in the session; see RFC 3551
(Table 4 and 5).
•
Maximum packet size
: Maximum size (in ms) of packets received during the
report interval.
•
Silence suppression
: Number of silence suppression activation objects
found in the RTP stream received. A silence suppression activation object is
defined as a period of silence when no encoded voice signals were trans-
mitted by the sender.
•
Count of good packets
: Total amount of good packets.
•
Maximum jitter
: Maximum jitter (in ms) found during the report interval.
•
Maximum inter-arrival jitter
: Maximum of the inter-arrival jitter values (in
ms). The inter-arrival jitter is the smoothed absolute value of the jitter
measurements. It is calculated continuously. For details about the calculation,
see RFC 3550.
•
Periods jitter threshold exceeded
: Number of observation intervals in which
the threshold for maximum jitter was exceeded.
•
Round trip delay
: Average value of delay calculated for each RTCP packet.
The first value is available after about 15 sec.
