Problem with ht503 and call hangup


I have purchase one ht503 … my problem is when i recevie a call … i hangup in my telephone but the call don’t hangup on ht503.If i make a new call and i Hangup call all work …My is PSTN Disconnect Tonef1=425@-12,f2=425@-12,c=200/200-200/200;Enable Current Disconnect is set to noEnable PSTN Disconnect Tone Detection is set to yesCurrent Disconnect Threshold (ms): is 100 Thanks Papini Saschaps- esxcusme for my English but I’m italian …



Have you managed to resolve this as i have the same problem.