Eicon Networks CX1 Manuel d'installation télécharger pdf (Page 33)

G&R

Two-way-simultaneous sessions do not have a ‘turn’ concept, but the DSA

session records indicate the enclosure level specified by the sender. Thus data

blocks may be delivered with enclosure ‘end of group’ indicating ‘turn’.

GCOS8 DACQ applications using interactive dialog will generally indicate

‘turn’ at the end of their output even if they are configured as two-way

simultaneous. GCOS6 command mode does not indicate 'turn'. Forcing two

way alternate (-CM TWAA) is sometimes the only way to make some

applications function correctly, and the Host Links products which have

problems with ‘turn’ will do this by default.

The handler by default asks for an ASCII session when connecting to GCOS6

and GCOS8, and an EBCDIC session for GCOS7 and IBM hosts. When an

ASCII product like Qsim uses an EBCDIC session to GCOS7 the code set is

transliterated in the line handler. The transliteration can be modified to map

ÆØÅ æøå ‘correctly’ for Scandinavian users (-SX). When G3270, G5250,

the 3270 CPI-C API or the 5250 CPI-C API use an EBCDIC session

they do their own transliteration

Service messages

The line handler accepts service messages for connect $*$CN, disconnect

$*$DIS, break $*$BRK (attention, and possibly purge undelivered data,

depending on configuration of the mainframe, and/or application), the two

attention signals $*$A1 (attention type 1), $*$A2 (attention type 2) and

identification query $*$ID from the communications product using the

handler. You can type them and transmit when using an emulator or

concentrator. Unknown service messages (messages beginning with $*$ but

where the 2-3 following characters are not recognized) will cause an error

message.

Interpretation of service messages within the message text can be disabled

(-DSD OFF as an emulation parameter) so that they are transmitted as data to

the mainframe. The emulators all have command keys for issuing service

messages that may be used instead of typing $*$ if interpretation is disabled.

User applications using one of our communications APIs from the GlAPI

library must send service messages themselves when the Gline API is used,

but they will be sent automatically by CMALLC, CMDEAL and CMSERR

when one of our CPI-C APIs is used.

Gline Line Handlers and Configuration

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Eicon Networks CX1 Manuel d'installation Page 33