NEC NDA-30115-001 User Manual
NDA-30115 Revision 1.0
Page 9
Property Management System - Communication Interface
Architecture
From the PMS to the NEAX
Figure 2-3 PMS to NEAX protocol
Start
Sequence
Accept
Reject
Contention
Interrupt
Pause
Message
Accept
Reject
No Answer
Interrupt
Pause
End
Code
Wait
1 second
Send
Receive
Receive
Send
Send
retry
quit
Query
Wait
1 second
No Answer
quit
retry
continue
quit
1
2
3
4
1 - Do not respond. Immediately cease send attempt and
2 - Ignore Interrupt and send message if 8 messages in queue.
3 - Retry is 3 times; quit on 4th Reject.
4 - Retry is 32 times; quit on 33rd No Answer.
3 - Retry is 3 times; quit on 4th Reject.
4 - Retry is 32 times; quit on 33rd No Answer.
receive message from NEAX.