Refer to the exhibit. The Greene Supply Company is integrating Cisco Unified CallManager Express into a SIP network. Which two statements are accurate?()
A.SIP support in dial peers is a Cisco IOS function.
B.Use the notify-based DTMF relay mechanism that is proprietary to Cisco.
C.SIP support in Cisco IOS is a function of localized call processing integrated with Cisco Unity Express.
D.Use either the notify-based DTMF relay mechanism that is proprietary to Cisco or the RFC-based DTMF relay.
E.The SIP server must be configured for the E.164 numbers that are going to register with the Cisco CallManager Express database.