RTP Statistics

Yeti calculates statistics for RTP streams processed by system. Such statistics usually based on two sources - internal RTP counters and remote statistics received by RTCP protocol. In case of lack of RTCP support on remote gateway, RTCP related measurement will be unavailable(empty). Other possible case - wrong RTCP implementation on remote side will cause invalid data in RTCP related counters. Attributes marked as Local data is not depend on remote RTCP implementation.

RTP Statistics‘s attributes:

Id
Records unique identifier
Local Tag
RTP stream owner session local_tag. Local tag Correlates with local_tag and legb_local_tag fields of CDR
Time Start
RTP stream instance create time
Time End
RTP stream instance end time (actually the time when statistics requested from stream)
Pop
Pop
Node
SEMS node name that collected this statistics
Gateway
Remote gateway name
Gateway External
External ID of remote gateway
RTCP RTT Min
Minimal round trip time reported by remote gateway using RTCP protocol. RTT calculated as delay since last SR (DLSR): 32 bits. See RFC
Unit - μs
RTCP RTT Max
Maximal round trip time reported by remote gateway using RTCP protocol
Unit - μs
RTCP RTT Mean
Mean round trip time reported by remote gateway using RTCP protocol
Unit - μs
RTCP RTT Std
Standard deviation of round trip time reported by remote gateway using RTCP protocol
Unit - μs
Rx RTCP RR Count
Count of RTCP Receiver Reports received from remote gateway. Local data.
Rx RTCP Sr Count
Count of RTCP Sender Reports received from remote gateway. Local data.
Tx RTCP RR Count
Count of RTCP Receiver Reports sent to remote gateway by yeti. Local data.
Tx RTCP SR Count
Count of RTCP Sender Reports sent to remote gateway by yeti. Local data.
Rx Ssrc
SSRC of incoming stream. Local data.
Local Host/Local Port
Address of local UDP socket used to RTP receiving and transmission. Local data.
Remote Host/Remote Port
Address of remote UDP socket. Local data.
Rx Packets
Count of received RTP packets. Local data.
Rx Bytes
Unit: byte
Data amount of received RTP packets. Local data.
Rx Total Lost
Count of lost incoming RTP packets. Local data.
Rx Payloads Transcoded
RTP payloads that was transcoded after receiving. Field is empty is transcoding was not used for RTP processing. Local data.
Rx Payloads Relayed
RTP payloads that was relayed to other call leg without transcoding. Local data.
Rx Decode Errors
Count of received RTP packets that was not decoded?? Local data.
Rx Out Of Buffer Errors
Count of RTP packets read from socket that can’t be saved due lack of free slots in stream ring-buffer?? Local data.
Rx Rtp Parse Errors
Count of received RTP packets that was not parsed?? Local data.
Rx Packet Delta Min
Minimal inter-packet interval on RX stream. Local data.
Unit - μs
Rx Packet Delta Max
Maximal inter-packet interval on RX stream. Local data.
Unit - μs
Rx Packet Delta Mean
Mean inter-packet interval for on RX stream. Local data.
Unit - μs
Rx Packet Delta Std
Standard deviation of inter-packet interval on RX stream. Local data.
Unit - μs
Rx Packet Jitter Min
Minimal RTP jitter calculated from inter-packet interval on RX stream. Local data.
Unit - μs
Rx Packet Jitter Max
Maximal RTP jitter calculated from inter-packet interval on RX stream. Local data.
Unit - μs
Rx Packet Jitter Mean
Mean RTP jitter calculated from inter-packet interval on RX stream. Local data.
Unit - μs
Rx Packet Jitter Std
Standard deviation of RS stream jitter. Local data.
Unit - μs
Rx RTCP Jitter Min
Minimal RTP jitter calculated from RTCP reports (in case if remote side sent such reports) on RX stream
Unit - μs
Rx RTCP Jitter Max
Maximal RTP jitter calculated from RTCP reports (in case if remote side sent such reports) on RX stream
Unit - μs
Rx RTCP Jitter Mean
Mean RTP jitter calculated from RTCP reports (in case if remote side sent such reports) on RX stream
Unit - μs
Rx RTCP Jitter Std
Standard deviation of RTP jitter calculated from RTCP reports (in case if remote side sent such reports) on RX stream
Unit - μs
Tx Ssrc
SSRC of transmitted stream. Local data.
Tx Packets
Count of packets trasmitted by yeti to remote gateway. Local data.
Tx Bytes
Unit: byte
Data amount trasmitted by yeti to remote gateway. Local data.
Tx Total Lost
Count of packets trasmitted by yeti to remote gateway and lost during delivering to remote gateway. Value calculated as difference between count of transmitted packets and count of received packets on remote side(reported by RTCP)
Tx Payloads Transcoded
RTP payloads that was transcoded before transmitting. Field is empty is transcoding was not used for RTP processing. Local data.
Tx Payloads Relayed
RTP payloads that was relayed from other call leg without transcoding. Local data.
Tx RTCP Jitter Min
Unit: ms
Minimal RTP jitter calculated from RTCP reports (in case if remote side sent such reports) on transmitted stream
Tx RTCP Jitter Max
Unit: ms
Maximal RTP jitter calculated from RTCP reports (in case if remote side sent such reports) on transmitted stream
Tx RTCP Jitter Mean
Unit: ms
Mean RTP jitter calculated from RTCP reports (in case if remote side sent such reports) on transmitted stream
Tx RTCP Jitter Std
Unit: ms
Standard deviation of RTP jitter calculated from RTCP reports (in case if remote side sent such reports) on trasmitted stream