> I have put a pbx into a resort with Polyycom phones, everythign works 
> great, except the kitchen staff cannot hear the phone ring. I know many 
> legacy systems employ a big red flashing light, any ideas on doing 
> something similar?

Several choices, some better then others.... ;)

- radio shack use to sell kits that sensed audio noices and tripped a
  relay. Install inside the phone and sense the ringer audio. Suspect 
  similar kits sold by others.

- cheap ata with inexpensive rj11 radio shack ringer adapter, and sip/11&sip/22

- cheap ata with telco-style industrial horn

- modify sip phone electronics to add a relay closure (and lights) based
  on ringer signal


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