Cisco ATA 188 Administrator's Manual page 146

Call Flow Scenarios for Successful Calls
Table D-1 Action Descriptions for First Call Flow
Step Action
Step 1
StationRegister—Cisco ATA to Cisco CallManager Cisco ATA sends a message to announce its existence to the
Step 2
StationReset—Cisco CallManager to Cisco ATA
Step 3
StationIpPort—Cisco ATA to Cisco CallManager
Step 4 StationRegisterAck—Cisco CallManager to Cisco
ATA
Step 5 StationCapabilitiesReq—Cisco CallManager to
Cisco ATA
Step 6 StationVersionReq—Cisco ATA to
Cisco CallManager
Step 7 StationCapabilitiesRes—Cisco ATA to
Cisco CallManager
Step 8
StationVersionRes—Cisco CallManager to
Cisco ATA
Step 9
StationButtonTemplateReq—Cisco ATA to
Cisco CallManager
Step 10 StationButtonTemplateRes—Cisco CallManager to
Cisco ATA
Step 11 StationTimeDateReq—Cisco ATA to
Cisco CallManager
Step 12 StationDefineTimeDate—Cisco CallManager to
Cisco ATA
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide (SCCP)
D-4
Description
Cisco CallManager.
The Cisco CallManager commands the Cisco ATA to reset its
processes.
The Cisco ATA provides Cisco CallManager with the UDP
port for the RTP stream.
Cisco CallManager acknowledges the registration of the
Cisco ATA.
Cisco CallManager requests the current capabilities of the
Cisco ATA.
Cisco ATA requests the version number of the software.
Cisco ATA responds to the Station Capabilities Request
message from the Cisco CallManager. These capabilities are
cached in the Cisco CallManager and are used to negotiate
terminal capabilities with an H.323-compliant terminal.
Cisco CallManager informs the Cisco ATA of the current
software version number.
Cisco ATA requests the button template definition for that
specific Cisco ATA.
Cisco CallManager updates the button template information
contained in the Cisco CallManager.
Cisco ATA requests the current date and time for internal
usage and for displaying a text string.
Cisco CallManager provides the date and time information to
the Cisco ATA.
Appendix D SCCP Call Flows
OL-3141-01