Only one HDLC.FRAME terminal may be configured on each port
(or in the case of an E1/T1 interface, on each subchannel). The
only exception to this rule is that two Protocol Analyzer terminals
(one for transmitted and one for received data) may also be configured
on a subchannel.
The terminal definition has the following general format:
Term zlu card:port:subc type poll select application_data name
- ZLU
This number (120 in the example) assigns a unique reference
number for this terminal.
- Card:port:subc
The port assigned must be configured as in “Port Definitions” above and the Card must have the appropriate
HDLC.FRAME firmware available. The subsc parameter is used on E1/T1
cards and must have been defined in the Subchannel Definition section.
- type
This name defines a device type which is used with
the HDLC.FRAME protocol. It must be set to "HDLC.FRAME".
- poll
The format of this parameter is described in the “E1/T1 HDLC.FRAME Configuration Values” section of this chapter.
- select
The individual parameters contained in the select
word are defined and described in a later section of this chapter.
- application_data
Five 16 bit parameters are required here, the first
of which is known as the "Application number".
This number is used by applications to locate terminal devices,
avoiding the need for physical configuration data, such as card
and port numbers, in the application. The Application Number should
be greater than 1000 for customer applications. The remaining four
parameters may be used for any purpose. All five parameters are
available to the application in the Logical Terminal table, which
can be read by using the "zinfo()" library function.
- name
A description of the HDLC.FRAME terminal, preferably
including a reference to the location of the remote end of the link.
This field is used in some ZMNTR displays. It may also be accessed programmatically
from the Logical Terminal table using the "zinfo()" library
function.
An example Level 1 terminal definition line follows:
Term 120 1:6 HDLC.FRAME 0000H 0000H 1000 0 0 0 0 "HDLC device port 6"
This terminal definition specifies a terminal with ZLU of
120 on Card 1 Port 6.
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