I just bought the sip file and got configured my ATA which is woring fine now what i want to do is that forward my callcentric SIP URI to my freephoneline.ca registered ATA can any one help me that is it possible if so how and i put URI like 1403XXXXXXXX@voip.freephoneline.ca and i can hear the ring but actually there is not ring on ATA and there system says invalid URI ?? is FPL block incomming SIP URI calls ? or what any light whould be help full thanks.
