Status-Session Codes

For the status codes used on Status-Session messages, the following table lists:

See Status-Session Message for an overall description of the role of the Status-Session message. The individual codes are discussed in The SSCP Connection and The PLU Connection.

Status code Value Qualifying code Value Usage
STNOSESS
(no session)		 0x01 STPUINAC
STPUACT
STPUREAC
STLUINAC		 0x10
0x03
0x04
0x11		 SSCP
SSCP
SSCP
SSCP
STLINERR
(link error)
 0x02 DLC ERROR (See Note 1) SSCP
STLUACT
(LU active)		 0x05 - - SSCP
STLUREAC
(LU reactivated)		 0x06 - - SSCP
STBETB
(between brackets)		 0x07 - - PLU

Note
  1. The qualifying status code supplied on a Status-Session link error is the error code supplied by the data link control layer of the local node.

    Status-Session link error code 20 is generated by the node rather than by the link service. It indicates that the link service is not yet available, but is being activated. Ignore this error code during session activation. Otherwise, all Status-Session link errors (including 20) will cause the emulator to send a Close(SSCP). When the emulator receives the Close(SSCP) Response, it will start again and send a new Open(SSCP).

  2. The session status identifier displayed by the Microsoft® SNA Server OS/2 and Microsoft® MS-DOS®-based 3270 emulators is obtained by adding 484 (decimal) to the qualifying status code shown above.