It's big benefit: It allows you to "ignore" the long hold times waiting for customer service. That was the point of Beachhead2's strategy.I don't see the utility of an external speaker, I have to turn down the speaker on my phone wheever I'm on hold at most locations with the terrible distorted music or in the case of Lionel idiotic NASCAR clips that run over-and-over-and-over again!
While on hold waiting for "your turn", you can concentrate and work at the PC with both hands - or keep working on the loco just ignoring the call. When a live person comes on, you can instantly converse with them via the speaker phone.
If the "Muzac" is annoying, just turn down the volume on your cell. The volume on the speaker phone will go down as well.