What is the recommended maximum one-way latency for voice and video networks?

100 ms is below the standard threshold and represents an unnecessarily strict requirement not defined by ITU-T G.114 as the maximum.

The ITU-T G.114 standard specifies 150 ms as the maximum acceptable one-way end-to-end delay for voice communications. Exceeding this threshold introduces noticeable conversational degradation, including talk-over effects and awkward pauses. This same 150 ms recommendation is adopted by Cisco as the design target for QoS-enabled voice and video networks.

200 ms exceeds the ITU-T G.114 recommended maximum and would result in noticeable voice quality degradation for users.

300 ms far exceeds the standard and would cause severe conversational timing issues, making real-time communication impractical.