Incoming Calls, No Ringtone

I’ve set up an AsteriskNOW system with some soft/hard clients, and a Vega 400 gateway for inbound/outbound calls. Now, as of yesterday everything was working just fine. However, today, when someone calls in from outside the network, there is no ring tone on their end. The receiving internal phone rings, but not the calling phone. Also, if one internal phone calls another internal phone, you can hear the ring.

One more thing: if I call in from outside I don’t hear the ring. If I am then transferred to another internal phone I hear the ring.

Any ideas what I did to change this in the first place?

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