Which device is the initiator of a StationD message in a Cisco Unified Communications Manager SDI trace?
A. SCCP IP phone
B. SIP IP phone
C. Cisco Unified Communications Manager
D. MGCP analog gateway
E. digital voice gateway
Which device is the initiator of a StationD message in a Cisco Unified Communications Manager SDI trace?
A. SCCP IP phone
B. SIP IP phone
C. Cisco Unified Communications Manager
D. MGCP analog gateway
E. digital voice gateway
http://faculty.valenciacollege.edu/wyousif/VoIP/PP_Presentations/Understanding%20IP%20Phone%20Behavior.ppt
IP phones use the Skinny protocol to communicate with CallManager
All messages to and from a Skinny device are preceded by either the word StationInit or StationD.
StationInit means that an inbound TCP message form a Skinny station reached CallManger.
Example:
StationInit: 000000004 OffHook
StationD signifies that the CM server is sending a message to the IP phone.
The next message in the trace file is: StationD: 000000004 StationOutputDisplayText=‘ 40000
StationD signifies that the CM server is sending a message to the IP phone.