Push Communication (Report-By Exception) - GE MDS SD Series Technical Manual

eration for port sharing systems. See "Understanding the Use of Virtual Radio Channels
(VRCs)" on Page 55.
NOTE An option exists to operate in Packet mode without MAC. However, this Packet mode
option should only be used for systems that use legacy methods of collision avoidance
including Multihost and Listen Before Transmit (LBT). The mode Packet w/MAC pro-
vides superior performance and better network reliability, collision avoidance and better
overall throughput.
Figure 9. Port Sharing with Multiple Hosts Arrangement

Push Communication (Report-by Exception)

Push Communication, sometimes referred to as Report-by-Exception (RBE), differs from polled
response in that a Remote radio normally transmits only when it has data to send. It does not de-
pend on polling from a Master radio to initiate transmission. Some typical characteristics of push
communication systems are as follows:
• Remotes transmit asynchronously
• May contain large amounts of data
• Buffering and flow control are used
MDS 05-4864A01, Rev. I
Using Packet w/MAC Mode
SD Series Technical Manual 13