Call Parameters
| Standard Interface | Enhanced Interface | |
|---|---|---|
| Function Number | Must be 122 | |
| Data String | See the following table | |
| Length | Must be 9 | Must be 20 |
| PS Position | NA | |
The calling data string can contain:
| Byte | Definition | |
|---|---|---|
| Standard | Enhanced | |
| 1 | 1 | A 1-character presentation space short name (PSID) |
| 2–4 | Reserved | |
| 2–3 | 5–8 | 16- or 32-bit field for the optimum supported inbound buffer size (Returned value) |
| 4–5 | 9–12 | 16- or 32-bit field for the maximum supported inbound buffer size (Returned value) |
| 6–7 | 13–16 | 16- or 32-bit field for the optimum supported outbound buffer size (Returned value) |
| 8–9 | 17–20 | 16- or 32-bit field for the maximum supported outbound buffer size (Returned value) |