
Interoperability Testing
Reason and Refuse Codes
Session Refuse Codes
Table 
| Table  | Session Refuse Codes | |
| 
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 | 
| 
 | Code | Meaning | 
| 
 | 
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 | 
| 
 | 0 | Reason not specified. | 
| 
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 | 
 | 
| 
 | 1 | Rejection by called Session service user due to | 
| 
 | 
 | temporary congestion. | 
| 
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 | 
 | 
| 
 | 2 | Rejection by called Session service user. The | 
| 
 | 
 | following octets may be used for up to 512 octets of | 
| 
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 | user data. | 
| 
 | 
 | 
 | 
| 
 | 81 | SSAP identifier unknown. | 
| 
 | 
 | 
 | 
| 
 | 82 | Session service user not attached to SSAP. | 
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 | 
 | 
 | 
| 
 | 83 | SBM congestion at connect time. | 
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 | 
 | 
 | 
| 
 | 84 | Proposed protocol versions not supported. | 
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 | 
 | 
| Chapter 1 | 51 | 
