Chapter 3. Troubleshooting

Chapter 3. Troubleshooting
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This chapter contains the following sections:

Connection Problems

If a connection to a host is rejected or disconnected, the pad program displays a message giving a reason for the call being cleared. The message includes a hexadecimal error code. There are two types of problems:

Problem with the network between the pad program and the remote host.

This happens if a wrong LSAP address is called, or if the remote host is down or not switched on, or if the network between the host and the pad program is down. The message is:
Call Cleared Out of Order (0900)

Rejection or disconnection caused by the remote host.

In this case, the message is of the form:

Call Cleared By Remote (00E8)

The first two hexadecimal digits are 00 and the last two identify the reason for the rejection or disconnection. Table 3-1 is a list of the more common reasons reported:

Table 3-1. Disconnection Codes

Error Code	Error Code Interpretation
E1& E2	The connection was disconnected. The remote host has gone down or the network between the `pad` program and the remote host has failed.
E3 & E4	The connection request was rejected by the remote host for unspecified reasons.
E7	The connection request was rejected. The called NSAP address on the remote host is busy.
E8	The connection request was rejected. The called NSAP address on the remote host is permanently unreachable. This code may be returned if the host name is passed to a gateway and the gateway cannot find the name in its tables.
EB	The connection request was rejected. The called NSAP address on the remote host is unknown.
F1	The connection was disconnected. Normal disconnection by the remote host.
F2	The connection was disconnected. Abnormal disconnection by the remote host.

Using a Hard-Copy Terminal

If you are using a hard-copy terminal, set the terminal type by typing:

printer

If you are on a hard copy terminal and you type <Ctrl x>, the sequence “XXX” followed by a Newline is echoed. Also, when you delete characters, your data input may appear confused. The deleted characters are echoed between `\' and `\' characters. You can redisplay the whole edited line by typing <Ctrl r>.

Parameter Values

Table 3-2 summarizes the PSS V profiles and CCITT standard parameters, which are used with the PAR and PARM commands. For more information on the meanings of parameters, refer to the CCITT X.3 Recommendation.

Table 3-2. Parameter Values

Parameter and Meaning	PSS V profile	CCITT Transparent	CCITT Simple
1. Escape to `pad` prompt	1	1	0
2. Echo	1	1	0
3. Data forwarding	48	126	0
4. Data forwarding on timeout	0	0	20
5. Flow control by `pad`	0	1	0
6. Suppression of `pad` service signals	1	1	0
7. Action of `pad` on break	5	2	2
8. Data delivery	0	0	0
9. Padding after CR	0	0	0
10. Line folding	*	0	0
11. Terminal speed	9600	14	14
12. Flow control by terminal	1*(0)	1	0
13. LF insertion after CR	6	0	0
14. Padding after LF	0	0	0
15. Editing	1	0	0
16. Character delete character	127	127	127
17. Buffer delete	24	24	24
18. Display character	18	18	18
19. Terminal type	2	1	1
20. Echo mask	192	0	0
21. Parity	0	0	0
22. Page wait	0	0	0

Note: The line folding values as denoted with an “*” in Table 3-2 differ depending on the V profile number: V1-72, V2-120, V3 -80, V4-132, or V5-80.

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Chapter 2. SX.25 Pad Program Commands		Glossary