Evolution Digital
EVO-SUP-DMS2002HD-U-001-v1r0 Page 79
Appendix D DTA Headend Messages
Throughout this document, the term “headend message” has been used to generically refer to messages from the
headend used to activate or configure a DTA. This Appendix provides some insight into the specific messages that
originate from the headend when received by the DTA cause it to be activated, deactivated and be configured with
site specific settings.
D.1 DTA Configuration Message
DTA Configuration Message is a Network Config Message. With a Network Config message the following values
are defined and assigned.
• Site code (also referred to as Location ID or LocID)
• Timeout value
• Site timeout policy
• Max Site Errors
• VCT ID
• Timezone information including current offset, daylight savings entry and exit
The timeout policy will dictate what messages the DTA looks for when determining if the timeout counter is
decremented. Specifically, the DTA can either look for a connect or site announcement message. Connect and site
announcement messages are part of the DTA Operations Messaging. Please consult with your headend controller
manufacture to understand the frequency of the playout of Network Config messages.
D.2 DTA Operations Messages
DTA Operations Messages, or just DTA Ops messages, are messages used to instruct the DTA to perform a specific
operation. DTA Operations Messages are comprised of the following sub commands.
• Initialize
• Reset – warm or cold
• Connect – activation command
• Disconnect – deactivation command
• Site Announcement – announces controller site code, MSO Phone Number
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