stability test of cambodia cn2 in live video and voice call scenarios

this article focuses on "stability test of cambodia cn2 in live video and voice call scenarios" and introduces the purpose of the test, key indicators, solution design and optimization suggestions. for operations, technology and operation and maintenance teams, we strive to take into account both implementability and readability.

as an internationally oriented, route-optimized transmission network, cn2 has natural advantages for cross-border real-time services. when deploying cn2 in cambodia or using it through cambodia's entrances and exits, common requirements include live broadcast delay control, call clarity assurance, and packet loss suppression. these are core factors that affect user experience.

the test is designed to evaluate the stability of cambodia cn2 in live video (one-way or two-way low-latency streaming) and voice calls (voip/rtc) scenarios. typical scenarios include real-life workloads such as live backend streaming, audience distribution, multi-party voice conferencing, and intermittent switching on mobile terminals.

stability testing should focus on subjective/objective indicators such as delay (rtt/one-way delay), jitter, packet loss rate, jitter buffer occupancy, bandwidth availability, and mos. it is recommended to combine active detection (icmp/tcp/udp) and business layer observation (rtp/rtcp statistics) for quantitative measurement.

video live broadcast focuses on end-to-end delay, frame loss rate, code stream jitter and bandwidth burst capability. during the test, it is necessary to simulate different bit rates, key frame intervals and the number of concurrent viewers, record the buffer start time, playback freeze frequency and audience reconnection rate, and evaluate the stability of the experience.

voice calls emphasize voice continuity and intelligibility, and need to pay attention to one-way delay, jitter, packet loss, and jitter buffer rearrangement. use two-way call tests, multi-person conference scenarios and mobile network switching scenarios, combined with mos or automatic voice quality scoring tools to evaluate subjective experience.

it is recommended to deploy test terminals on local and remote nodes in cambodia respectively, use sip/rtp, webrtc, iperf3, rtpengine and professional streaming media servers, and use traffic playback, scene playback and real user simulation (rum) tools to ensure coverage of typical network conditions.

data collection should include business layer logs, network layer packet capture and active monitoring results. using periodic sampling and combined with emergency event records, we perform timing analysis on delay distribution, sudden packet loss, and bandwidth fluctuations to identify stability bottlenecks and correlate them with link quality events.

common experience thresholds in the industry can be used as a reference: voice one-way delay is better than 150ms, jitter is less than 30ms, and packet loss rate is less than 1%. video live broadcast is sensitive to bandwidth and jitter. the goal is to minimize the number of smooth playback interruptions and control the first buffering time.

multi-level optimization should be implemented to address the discovered problems: link-side optimization includes redundant routing and traffic engineering; the transport layer can enable fec/retransmission and adaptive bit rate; and the application layer optimizes buffering strategies and fast reconnection logic. at the same time, an alarm and sla verification mechanism is established.

stability is not a one-time verification exercise but requires continuous monitoring. it is recommended to set key indicator thresholds based on sla and implement automated alarms, conduct regular regression testing and pre-upgrade verification, and combine real user feedback with closed-loop optimization to ensure long-term stability.

common problems include large link jitter, sudden packet loss, and forwarding delays caused by load. for troubleshooting, you can first perform end-to-end comparison and segment packet capture and positioning, then verify the link quality, routing policy, and access-side device performance layer by layer, and finally formulate a targeted remediation plan.

regarding the "stability test of cambodia cn2 in live video and voice call scenarios", it is recommended to implement a multi-index, hierarchical testing strategy and combine it with automated monitoring to form long-term capabilities. through link redundancy, transmission optimization and application-level fault tolerance, real-time communication stability and user experience can be significantly improved.