Codes Specific to the Passport 4400 X.25 Services

The following is a list of the Cause and Diagnostic codes specific to the Passport 4400 X.25 services:

Cause codes for non-reset commands (primarily call clear indications - call setup problems).
Decimal code	Hexadecimal code	Meaning
01	01	Number busy
03	03	Invalid facility request
05	05	Network congestion
09	09	Out of order
11	0B	Access barred
13	0D	Not obtainable
17	11	Remote procedure error
19	13	Local procedure error
21	15	RPOA out of order
25	19	Reverse charging not subscribed
33	21	Incompatible destination
41	29	FS acceptance not subscribed
57	39	Ship absent

Cause codes for reset commands.
Decimal code	Hexadecimal code	Meaning
01	01	Out of order (packets out of sequence)
03	03	Remote procedure error
05	05	Local procedure error
07	07	Network congestion
09	09	Remote DTE is operational
15	0F	Net is operational
17	11	Incompatible destination
29	1D	Net out of order

Internal Diagnostic codes specific to Passport 4400 X.25 services.
Decimal code	Hexadecimal code	Meaning
133	85	General abort, used with Not Obtainable and Local Procedure Error cause codes, or an internally generated call abort.
134	86	Contact your support center if this problem persists.
135	87	Contact your support center if this problem persists.
136	88	Contact your support center if this problem persists.
137	89	Contact your support center if this problem persists.
138	8A	Contact your support center if this problem persists.
162	A2	DTE not operational
163	A3	DTE resource constraint (resources low, such as when attempting to use more than 96 virtual circuits - SVCs and PVCs)
164	A4	Fast Select subs
166	A6	No D-Bit support
224	E0	Reason undefined, or OSI service problem
225	E1	Transient disconnect. Try the call again.
226	E2	Permanent disconnect
227	E3	Unspecified transient reject (resources low, such as when attempting to use more than 96 virtual circuits - SVCs and PVCs). Try the call again.
228	E4	Unspecified permanent reject
229	E5	Transient QOS reject - unavailable. Try the call again.
230	E6	Permanent QOS reject - unavailable
231	E7	Transient reject - NSAP unreachable. Try the call again.
232	E8	Permanent reject - NSAP unreachable
233	E9	Unspecified reset
234	EA	Reset due to congestion
235	EB	Reject - NSAP unknown
240	F0	Unspecified reason
241	F1	Normal disconnection
242	F2	Abnormal disconnection
243	F3	Reason undefined - incompatible user data
244	F4	Transient reject (data errors, miscellaneous problems). Try the call again.
245	F5	Permanent reject - no listener present
246	F6	Transient reject - QOS unavailable. Try the call again.
247	F7	Permanent reject - QOS unavailable
248	F8	Reject - incompatible user data
249	F9	Reason undefined - bad protocol ID
250	FA	Reset - user resync

All other Cause and Diagnostic codes output by the Passport 4400 X.25 services are in accordance with the International Telecommunications Union (ITU) specifications (ITU-T Recommendation X.25, Annex E).