Specifications

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.