Protocol Specific Configuration
Terminal Definitions
Terminal Definitions
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.
36 | Chapter 4 |