Echoes, phone convo b/w digital ISP-provided internet landline and  office analog landline (probably an interface issue between digital and analog). Here is what the AI assistant said:

Echoes … Here is what the AI assistant said:

Echoes during phone convo (between digital ISP-provided landline and office analog landline). Answer from from my AI Assistant: “An echo during phone calls can occur for several reasons, including:

“1.Network Issues: Poor signal quality or network congestion can lead to echoes.

“2.Microphone and Speaker Feedback: If the microphone picks up sound from the speaker, it can create an echo effect, especially in speakerphone mode.

“3.VoIP Services: Internet-based calls may have latency issues that can cause echoes.

“Re phone convo being recorded by line interception: Look for other signs such as unusual background noise, battery drain, or unexpected data usage. However, these issues can also stem from technical problems rather than surveillance.”