VQmon/EP monitors voice calls and produces call quality estimates that can be reported as MOS scores and R factors through the media path using RTCP XR (RFC 3611) and SIP RTCP summary reports (RFC 6035). VQmon/EP detects packet loss and jitter buffer discard events, extracts key information from DSP software, and produces real-time call quality scores and diagnostic data. VQmon/EP is widely used in the industry and has been integrated into the products of over 50 equipment manufacturers. VQmon/EP generates listening and conversational quality MOS scores and R factors and a wide range of diagnostic data, making these available through an API as raw metrics, RTCP XR, and SIP RTCP Summary Report payloads. In addition, VQmon/EP provides real-time call quality thresholding, supporting either alert generation or automatic configuration.
Listening and conversational quality MOS scores (MOS-LQ, MOS-CQ)
Listening and conversational quality R factors (R-LQ, R-CQ)
Burst and gap call quality scores (R-Gap, R-Burst)
Narrowband and wideband R-factor and MOS scores
Degradation factors reports severity of quality degradation due to packet loss, discard, delay, codec, and other factors
Supports RTCP XR and SIP RTCP summary reports
Burst and gap loss/discard statistics
Supports VoIP, TDM, and hybrid TDM/VoIP applications
Support for packet, frame, and time-based jitter buffers
Support for a wide range of ITU, cellular, industry-standard, and proprietary codecs
Cumulative and interval metrics
Complies with or supports ITU-T P.564, G.107, ETSI TS101329-5 Annex E, RFC 3611, RFC 6035
Compact code size:
6 to 30 Kbytes
Efficient processing:
<500 instructions per second
VQmon
- Integrated Performance Analysis Technology for VoIP, Video conferencing, and IPTV
