Just installed an IPO 11.0.4.2 SE one of the expansion IP500v2 gateways has a PA system hanging off a standard analogue phone 8 card. You call the number and leave the message with the PA System then hang up, previously this was on a Siemens ISDX and this worked fine, with the IPO it plays the message back but has about a 6 second solid tone (Dial tone or disconnect tone at a guess) on the end of the message which is annoying. You can get it to work by dialing # when you finish your announcement which is accepted by the PA system as end of message, but the users are a bit set in there ways (same ISDX for 20 years or so). Any idea why its not clearing down the call instantly on hanging up or anything I can change?