Corporate cost-cutting and new technology have resulted in the advent of automated systems that can make the on-hold experience even more frustrating. It can feel near-impossible to get a human on the phone these days, which a national survey conducted by Consumer Reports found to be Americans' second-greatest annoyance, after hidden fees but beating out inaccurate weather reports and dog poop. Green observes that often people call as a last resort, because something on the website wasn't clear, perhaps, and they really need an answer quickly. So callers are captive listeners, a state often associated with the gridlock of waiting, whether in line at a Starbucks, in a dentist's chair, or in the proverbial elevator making its slow way up.
Even if you have a VoIP telephone system, your call will eventually go across the PSTN (like the traditional landline calls), where network operators are able to do whatever they like. Plus VoIP and mobile operators use high-compression codecs that degrade the overall quality of the sound. A good codec can take a 9600bps audio stream (toll quality ISDN voice) and take it down to the required bandwidth by a factor of 10 or more.

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