What it means
Applications often buffer arriving media briefly to smooth timing differences. If variation becomes too large, packets may arrive too late for playback, producing gaps or additional delay. Uniformly high latency is a different issue; packet loss concerns missing delivery. Both can coexist with jitter.
How this affects everyday use
Wireless retransmissions, congestion, unstable backhaul or changing routes can create uneven arrivals. A short speed test may miss intermittent problems.
A practical example
A meeting sounds broken whenever another device uploads photos, although the connection is fast when idle.
What to check
- Inspect call statistics for jitter, loss and delay separately.
- Compare a wired call with the same wireless location.
- Repeat under normal load and record when variation increases.
Practical next steps
- Remove a confirmed congesting transfer or schedule it later.
- Improve the affected radio or backhaul link.
- Use supported queue management when contention is demonstrated.
Keeping it reliable
Monitor representative calls rather than chasing one universal threshold. Application buffers and network paths differ. More bandwidth alone may not fix timing instability, and increasing buffering can add conversational delay.