The tables on the Midstream Leg Information page provide some or all of the following information. The charts below the tables present MOS, packet loss, average jitter, and maximum jitter for the stream leg.
The Mean Opinion Score (MOS) is an industry standard method for gauging call quality. MOS is an estimation of how impairments to a voice signal affect listener perception of call quality. Either the average or minimum value for the midstream leg.
MOS calculated from medianet data considers only the codec and any packet loss metrics. Other impairment metrics traditionally associated with a MOS, such as latency and jitter buffer loss, are unknown in medianet streams. Therefore, the MOS for medianet streams may be higher (better) than MOS reported from the endpoints, where all impairment metrics are known.
The ID number of the call to which the midstream leg becomes associated. The ID is a link to the call details on the Calls Overview page.
The call ID is "Unavailable" when the midstream leg is not associated with a call. For example, the caller dials a number, which generates stream legs. The callee does not answer, so the call is incomplete. Midstream legs are not associated with incomplete calls.
The codec in use for the stream leg, or one of the following descriptions:
The length of the stream leg.
The interface where traffic exits a device.
The date and time that the stream entered the destination port.
When applicable, this field explains why a medianet-enabled device did not forward packets as expected. For example, when the device drops packets, this field provides a Status of “Dropped” and a Reason such as “Bad TTL.”
The device manufacturer provides the Status and Reason descriptions. Two other descriptions provided in this field, Value and Extended, are not defined, and can vary depending on the Status and Reason.
When a forwarding status is available, this field contains a blue “i” icon. Position your mouse pointer over the “i” to review the information.
The ID number of the stream leg. Matches the ID number from the Midstream Legs page.
The interface where traffic enters a device.
The IP addresses of the devices that sent and received the stream leg, and a link to more information.
Packet delay that distorts the quality of a voice conversation. Either the average or the maximum value for the midstream leg.
The Locations of the devices that sent and received the stream leg. Can be <Unassigned> or another defined Location.
The type of media in the stream leg: Audio or Video.
The percentage of data packets that were lost in transit. These packets were sent but never received at the destination.
The number of data packets that are received per second. UC Monitor uses this value to determine whether an RTP stream is audio or video for medianet-enabled devices that do not report a codec.
The number of data packets that reached the destination, but then were discarded.
The number of data packets that were lost in transit. These packets were sent but never received at the destination.
The number of data packets in a stream.
The port number through which the devices sent and received the stream leg.
The contents of the SSRC field in the RTP header. Also a unique identifier of the source of the stream leg.
The date and time the stream left the source port.
(Time to Live) A counter embedded in data to prevent a data packet from circulating through the network indefinitely. The counter decrements each time that the packet passes through a router or a switch.
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