Which SIP message element is mapped to QSIG FACILITY messages being tunneled across a SIP trunk between two Cisco IOS gateways?

Which SIP message element is mapped to QSIG FACILITY messages being tunneled across a SIP trunk
between two Cisco IOS gateways?

A.
SIP UPDATE

B.
SIP OPTIONS

C.
SIP SUBSCRIBE

D.
SIP INFO

E.
SIP NOTIFY

Explanation:
Mapping of QSIG Message Elements to SIP Message Elements
This section lists QSIG message elements and their associated SIP message elements when QSIG
messages are tunneled over a SIP trunk.
• QSIG FACILITY/NOTIFY/INFO <—> SIP INFO
• QSIG SETUP <—> SIP INVITE
• QSIG ALERTING <—> SIP 180 RINGING
• QSIG PROGRESS <—> SIP 183 PROGRESS
• QSIG CONNECT <—> SIP 200 OK
• QSIG DISCONNECT <—> SIP BYE/CANCEL/4xx—6xxResponse

http://www.cisco.com/c/en/us/td/docs/ios/voice/sip/configuration/guide/15_0/sip_15_0_book/tun
neling_qsig.html