The SIPtrunk is registered to the system and we can make calls out. I have the trunk set to ring to a ring group but when the call comes in it rings for a split second then goes directly to a mailbox. If I change the destination to IVR, inbound calls flow to the IVR fine. If I change the destination to a known working extension the call rings for a split second then goes to voicemail. Also if I dial the code (800) for the ring group it does ring all phones and roll after 20 seconds to the IVR as programmed. I removed the SIP trunk and ring group and rebuilt them to no-avail. This setup did work until yesterday when the Google server became unresponsive and we had to reset it.