Exchange/RJE Manual

Programming Considerations
Using the Exchange/RJE Programmatic Interface
104698 Tandem Computers Incorporated 4–7
Table 4-2. Exchange/RJE Line Server Errors (Page 2 of 2)
Standard Error Messages (continued)
174 A WACK was received. The remote system is temporarily unable to receive.
200 The device is owned by the other port.
201 The system is unable to communicate over this path.
210 Ownership of the device changed during the operation.
211 The CPU failed during the operation.
219 An illegal reconnect occurred.
Exchange/RJE Specific Messages
301 The line server is returning a control message rather than data.
310 Record size mismatch error.
312 Attempted to dial out using a leased line.
350-449 Non-retryable errors returned from user-exit procedure.
450-510 Retryable errors returned from user-exit procedure.
>1000 Retryable errors returned from user-exit procedure.
Block Mode Block mode operations allow you to transfer larger block and record sizes than
allowed in standard 2780/3780-emulation mode. Three forms of block mode are
available:
Block mode with 2780 blocking
Block mode with 3780 blocking
Block mode without blocking
When you start a line server you determine whether the line will be used for standard
2780/3780-emulation mode, or block mode (with or without blocking).
To select standard 2780/3780 emulation mode, do not specify a value for
BLOCKSIZE.
To select block mode with 2780/3780 blocking, specify a value for BLOCKSIZE
and specify BLOCKING ON.
To select block mode without blocking, specify a value for BLOCKSIZE and
specify BLOCKING OFF.
Once you start a line server, you cannot change its mode of operation (except between
2780/3780 emulation and 2780/3780 blocking).