If you were troubleshooting NoRingbackTone on ISDN-VoIP(H.323) Calls and had problem that POTS (PSTN/PBX) user places a call (through Cisco router/gateways) and does not hearringbacktone before call isanswerered, what would you do?

A.
Usethe conf inline powercommand because it is not set in the terminating router.

B.
Reset all the phone connections on the IPSoftPhones

C.
ConfigureCiscoWorksCallManager to handle all errors automatically.

D.
Configure the Cisco IOS global configuration command voice call send-alert in the terminating router