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

Chapter 4 47

Protocol Specific Configuration

Terminal-Definition

Each HDLC/LAP-B (ABM) port or E1/T1 subchannel requires one (and

only one) Terminal-Definition for the HDLC/LAP-B (ABM) point-to-point

link. The LAP-B terminal is defined by a TERM line in the LAP-B

sample file (lapb_sample.answ).

Some sample HDLC/LAP-B (ABM) Terminal-Definition lines follow:

Term 120 1:6 HDLC.LAPB HDLC_DTE_400MS 1000 0 0 0 0 ”HDLC link 1”

The example above is a Terminal-Definition that defines an

HDLC/LAP-B(ABM)terminalwithZLU120onACCcard1port6.Itis

configured as a DTE with frame time-out value of 400 milliseconds.

Term 120 1:6 HDLC.LAPB 8080H 146AH 1000 0 0 0 0 “HDLC link 1”

The second definition is the same as the first except that it uses the

POLL and SELECT words to define the mode of operation. When the

POLL and SELECT values are used they are specified as two 16 bit hex

values.

The descriptions of the fields within these values are described in the

section “Poll/Select Configuration Values” in this chapter.

The Terminal-Definition takes the following format:

Term zlu card:port:subc type poll select application_data name <option>

The following list gives more specific information on the parameters in the

HDLC/LAP-B (ABM) Terminal-Definition.

ZLU This number (120 in the example) assigns a unique

reference number for this terminal.

Card:port:subc The card number must have been defined in an

Interface-Definition statement. The port must have

been defined in a Port -Definition statement. The

“:subc” information must be supplied for a 4-port E1/T1

card and should be omitted for all other card types. The

subchannel so specified must have been defined in a

Subchannel- statement.

Device ThedevicetypeoftheHDLC/LAP-B(ABM)terminal

must be HDLC.LAPB.