Comtec CDM-840 Installation And Operation Manual page 270

CDM-840 Remote Router
Appendix G
G.1.4 CDD-880 ECM Message Processing
Figure G-3 illustrates the internal logic diagram of the HCC processing of remote messages.
Processing
Description
Segment
1 ALOHA
2 TAP
SWITCH
3
PENDING
4 SWITCHED
Figure G-3. ECM Message Processing – CDD-880 Multi Receiver Router
Remarks
In "Assigned Slot" list
In "Switch Pending" list –
Switch Request sent to VMS up
to 5X in 12-second intervals
until response
G–6
Action Remarks
RID Detected – add to Detection
A
List of TAP
RID Detected – add to Detection
B
List of TAP
C Missed 'N' Consecutive Cycle
Registration complete – no more
D
slots needed
"Disable" message received from
E
VMS
CDM-840 received "Revert"
F
message from VMS
MN-CDM840
Revision 3