Which statement indicates something that can cause an inbound PSTN call to an H.323 gateway that is configured in Cisco Unified Communications Manager to fail to ring an IP phone?
A . The gateway is not registered in Cisco Unified Communications Manager.
B . The gateway IP address that is configured in Cisco Unified Communications Manager does not match the IP address that is configured at the gateway in the h323-gateway voip bind srcaddr command.
C . The Cisco Unified Communications Manager does not have a matching route pattern to match the called number.
D . The gateway is missing the command allow-connections h323 to h323 under the voice service voip configuration.
Answer: B