Am trying to replace my noisy Grandstream HT486 ATAs with HT813. I have got the beast basically working, apart from two problems:-
1. There is a long delay before the ATA will allow a PSTN call on the exchange line port to pass through the box to start ringing the V.O.I.P. phone.
2. Any call made from the V.O.I.P. phone over the Sipgate network will not clear down again unless that call is answered at the distant end. If the call is not answered, it will continue to ring unless I turn the ATA off.
Has anybody found this problem before?
