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Display Filter Reference: Link Access Procedure, Channel D (LAPD)
Protocol field name: lapd
Versions: 1.0.0 to 1.6.5
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| Field name | Type | Description | Versions |
|---|---|---|---|
| lapd.address | Unsigned integer, 2 bytes | Address Field | 1.0.0 to 1.6.5 |
| lapd.checksum | Unsigned integer, 2 bytes | Checksum | 1.2.0 to 1.6.5 |
| lapd.checksum_bad | Boolean | Bad Checksum | 1.2.0 to 1.6.5 |
| lapd.checksum_good | Boolean | Good Checksum | 1.2.0 to 1.6.5 |
| lapd.control | Unsigned integer, 2 bytes | Control Field | 1.0.0 to 1.6.5 |
| lapd.control.f | Boolean | Final | 1.0.0 to 1.6.5 |
| lapd.control.ftype | Unsigned integer, 2 bytes | Frame type | 1.0.0 to 1.6.5 |
| lapd.control.n_r | Unsigned integer, 2 bytes | N(R) | 1.0.0 to 1.6.5 |
| lapd.control.n_s | Unsigned integer, 2 bytes | N(S) | 1.0.0 to 1.6.5 |
| lapd.control.p | Boolean | Poll | 1.0.0 to 1.6.5 |
| lapd.control.s_ftype | Unsigned integer, 2 bytes | Supervisory frame type | 1.0.0 to 1.6.5 |
| lapd.control.u_modifier_cmd | Unsigned integer, 1 byte | Command | 1.0.0 to 1.6.5 |
| lapd.control.u_modifier_resp | Unsigned integer, 1 byte | Response | 1.0.0 to 1.6.5 |
| lapd.cr | Unsigned integer, 2 bytes | C/R | 1.0.0 to 1.6.5 |
| lapd.direction | Unsigned integer, 1 byte | Direction | 1.0.0 to 1.6.5 |
| lapd.ea1 | Unsigned integer, 2 bytes | EA1 | 1.0.0 to 1.6.5 |
| lapd.ea2 | Unsigned integer, 2 bytes | EA2 | 1.0.0 to 1.6.5 |
| lapd.sapi | Unsigned integer, 2 bytes | SAPI | 1.0.0 to 1.6.5 |
| lapd.tei | Unsigned integer, 2 bytes | TEI | 1.0.0 to 1.6.5 |