Doug, You have discovered the feature called "background music".
If you have a radio for Music on Hold connected to the system, you can listen to it through the phone by pressing the digit "1". If you have nothing connected to the MOH jack, then you will hear a hiss if you turn on the "background music" feature (or if you bump the digit "1"). There may be a way to disable the MOH in the ksu, but barring that you can just press 1 to toggle the feature on or off (or add music, then people will realize when they have turned it on). Charles ----- Original Message ----- From: "Doug Brander" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Cc: "Steve Fabrizio" <[EMAIL PROTECTED]> Sent: Tuesday, April 06, 2004 9:02 PM Subject: KX-T: KXTA-624 phone extension hissing Extensions are hissing with phone on hook. (like there is an open mike to the phone). KSU has been replaced with same problem showing up on different extensions. This condition can be replicated by pressing a non-used line (4 and above). Extensions that hiss will vary. Incomming lines were removed to eliminate them-same problem exists. _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt