I tried to hook up my voip phone (spa2102) to the dir-615 (hardware : C1 , frameware : 3.11NA) I can sync up the voip. However, no successful in coming and out going call can be made. The sympton is -
Outgoing call - death silence, the destination party no ring tone.
Incoming call - ring, after off-hook, it is silence. the calling party always hear ring tone even the called party pick up the phone.
I have tried - disable the SPI, upnp, sip, ..., .
Is ther anything I can try? Please advice and Thanks in advance.