Using HDLC.FRAME Protocol

Status and Error Messages

 

Non-E1/T1 Interface

 

The following transmit completion status codes may be generated by the

 

HDLC.FRAME protocol on a non-E1/T1 interface.

Table 3-1

Non-E1/T1 Interface Transmit Completion Status Codes

 

 

 

 

Transmit

Description

 

Status Code

 

 

 

 

 

IO_OK

No error detected.

 

 

This message was successfully transmitted to the

 

 

receiving station.

 

 

 

 

IO_DSBL

Terminal disabled.

 

 

Messages cannot be transmitted by a disabled terminal.

 

 

 

 

IO_LONG_MSG

There is a limit to the number of buffers which may be

 

(Z7340A only)

used for a single transmit frame. If this limit is exceeded,

 

 

the frame is flushed with this status code, and is not

 

 

transmitted. Note: The Z7340A card has a configurable

 

 

buffer size. A buffer size of 128 bytes or larger will

 

 

prevent this problem from occurring.

 

 

 

 

IO_SHRT_MSG

A zero length frame cannot be transmitted by the Z7340A

 

(Z7340A only)

ACC.

 

 

 

 

IO_TX_TMOUT

Cable or local modem fault.

 

 

This message cannot be sent or acknowledged because of

 

 

a bad clock or modem signal.

 

 

 

26

Chapter 3