X-RTP Statistics
Several vendors use a proprietary header in SIP to give statistics on the RTP stream. This proprietary SIP header has following names :
● X-RTP-Statistics
● X-RTP-Stats
● X-Siemens-RTP-stats-list
● P-RTP-Stat
When supported then this header can be found in a SIP BYE or 200 OK on a SIP BYE.
The VoIPAnalyzer Tool supports the X-Siemens-RTP-stats-list header.
An example of such a header is :
X-Siemens-RTP-stats-list: MT=0;PS=662;OS=105920;PR=661;OR=105760;PL=0;JI=0;LA=1;SS=0;EN=8;DE=8;IE=00;TCLW=52
With the following parameters :
| ● | IPL | IP Address Local |
| ● | PTL | Port Local |
| ● | IPR | IP Address Remote |
| ● | PTR | Port Remote |
| ● | SRCS | Source Synchronization Sending Identifier |
| ● | SRCR | Source Synchronisation Receiving Identifier |
| ● | EN | Encoding Codec |
| ● | DE | Decoding Codec |
| ● | SS | Silence Suppression Activations |
| ● | JI | Jitter |
| ● | LA | Latency |
| ● | PS | Packets Sent |
| ● | PR | Packets Received |
| ● | PL | Packets Lost |
| ● | PD | Packets Discarded |
| ● | OS | Octets Sent |
| ● | OR | Octets Received |
| ● | CPL | Consecutive Packets Lost |
| ● | CGP | Consecutive Good Packets |
| ● | MT | Media Type |
| ● | TB | Time Begin |
| ● | TE | Time End |
| ● | IE | Impairments |
| ● | TCLW | Telephony Echo Signal Attenuation |
This information is converted to a more readable table :
