Which parameter in an NTFY message is used by a Cisco IOS MGCP gateway to inform a Cisco Unified CM that an analog endpoint has gone off-hook?
A. Detect Events
B. Event States
C. Connection Mode
D. Observed Events
E. Requested Events
Which parameter in an NTFY message is used by a Cisco IOS MGCP gateway to inform a Cisco Unified CM that an analog endpoint has gone off-hook?
MSG
21:50:26: send_mgcp_msg, MGCP Packet sent —>
NTFY 41 aaln/S1/SU0/[email protected] MGCP 0.1
N: mgcp.aSCT1CA.atl0.cisco.com:2427
X: 50
O: L/hd
DECODE
NTFY 41 !— This is the notify (NTFY) message sent to the call agent to report !— an observed event. The number 41 is the notify sequence number.
aaln/S1/SU0/[email protected] !— This is the MGCP endpoint ID.
MGCP 0.1 !— The MGCP version is 0.1.
N: mgcp.aSCT1CA.atl0.cisco.com:2427 !— This is the notified entity ID with destination !— User Datagram Protocol (UDP) port number.
X: 50 !— The request ID is 50.
O: L/hd !— The observed event (O) off-hook (hd) is detected !— with use of line package (L).
D is the correct answer. Observed Events.
Based on RFC, there is no such parameter “Detect Events”. The correct answer should be D
https://tools.ietf.org/html/rfc3435#page-44