Administrator's Guide

Data modules
Issue 5 October 2002 737555-233-506
LAYER 2 PARAMETERS
Frame Size (N1)
Specifies the number of bytes in a frame.
Idle (T4) Timer (1/10 seconds)
The T4 timer is a system parameter that represents the time a DTE allows without
frames being exchanged on the data link.
Number of Outstanding Frames (w)
Specifies layer 2 window size.
Retransmission (T1) Timer (1/10 seconds)
The T1 timer is started at the beginning or the end of the transmission of a frame.
At the end of this timer, retransmission of a frame is initiated according to the
procedures for link set-up and disconnection or information transfer.
Retry Attempt Counter (N2)
Specifies the number of times to send one frame when this frame is not confirmed
for a period of time.
Valid entries Usage
135
263
If the value is 135, there can be up to 1080 bits within a
frame. This value is suitable for all adjuncts and for DCS.
Valid entries Usage
0
through 250
Valid entries Usage
1
through 7
If you enter 2, up to 2 frames can be sent without
confirmation.
Valid entries Usage
0
through 250
Valid entries Usage
0
through 7