ACC HDLC/LAP-B (ABM) User's Guide

Chapter 4 53
Protocol Specific Configuration
Poll/Select Configuration Values
Option Word
Figure 4-3 Option Word Format
IUF Error handling, normal when 0. This means normal
error handling (level 2 link reset) on receipt of
unsolicited response frame with F=1. 1 means Ignore
F=1 (treat as F=0) in any unsolicit ed response frames.
Extended K Window size for extended sequence numbering. When
K=0, extended sequence numbering is selected. The
Extended K field is used to configure the windows size
for modulus 128 sequence numbering. Valid values for
this field are from 1 to 127 inclusive.
15 10987654321011121314
Reserved IUF Extended K