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A.signaling travels in-band 
B.up to 24 voice channels 
C.up to 32 voice channels 
D.signaling travels in time slot 17 
E.uses Q.931 signaling protocol in a common channel

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.