Protocol Server
The port settings configuration is the same as with the Device Server -
except the Advanced settings called MTU and Idle size.
MTU
An incoming frame is closed at this size even if the stream of bytes continues. Consequently, a perman-
ent data stream coming to the serial interface results in a sequence of MTU-sized frames sent over
the network. The default value is set to 1400 bytes.
Idle size
Received frames on COM are closed when the gap between bytes is longer than the Idle value. This
parameter defines the maximum gap (in milliseconds) in the received data stream. If the gap exceeds
this value, the link is considered idle, the received frame is closed and forwarded to the network.
The default Idle size differs based on the serial baud rate configuration. Remember that the default
Idle sizes are set to the minimal possible values:
ms
bps
120
115200
60
57600
30
38400
20
19200
10
9600
5
4800
5
2400
5
1200
5
600
5
300
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© RACOM s.r.o. – M!DGE2 GPRS/UMTS/HSPA+/LTE router
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