An audio waveform resolving into a grid of text lines, representing speech-to-text conversion.
A call route that terminates at a marked failure point, continuing only as a broken dashed line.
Measurement ruler over a row of character cells, marking a substring offset and length.
Two parallel signalling rails converging at endpoints, representing chan_sip and PJSIP running side by side.
Audio waveform travelling inside a bounded, measured channel.
Stacked horizontal strata representing software layers, with the Asterisk layer highlighted.