From 1d7f3fdd6ed2ab3a2cd72a433bb1c8af8a459d8f Mon Sep 17 00:00:00 2001 From: Bryan Biedenkapp Date: Fri, 28 Feb 2025 10:35:16 -0500 Subject: [PATCH] document control byte values for DMR and P25; --- docs/TN.1000 - FNE Network.adoc | 38 +++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/docs/TN.1000 - FNE Network.adoc b/docs/TN.1000 - FNE Network.adoc index a7d452b2..0bec863c 100644 --- a/docs/TN.1000 - FNE Network.adoc +++ b/docs/TN.1000 - FNE Network.adoc @@ -657,6 +657,21 @@ The payload for a DMR protocol data message is formatted: | BER | RSSI | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +[discrete] +==== Control Flags +[cols="2,1,2"] +|=== +|Name |Flag |Description + +|Grant Demand +|$80 (0x80) +|This control flag indicates the packet contains a remote grant demand request. + +|Unit to Unit +|$01 (0x01) +|This control flag indicates any included control request is a unit-to-unit request. +|=== + === 3.3 P25 Protocol Data For both reception and transmission of P25 protocol data on the network, simple packets are formed using the Protocol function and P25 sub-function. @@ -703,6 +718,29 @@ All messages (with the exception of PDUs) carry this message header: | | +-+-+-+-+-+-+-+-+ +[discrete] +==== Control Flags +[cols="2,1,2"] +|=== +|Name |Flag |Description + +|Grant Demand +|$80 (0x80) +|This control flag indicates the packet contains a remote grant demand request. + +|Grant Denial +|$40 (0x40) +|This control flag indicates any included grant demand request is to be denied. + +|Encrypted +|$08 (0x08) +|This control flag indicates any included control request is for encrypted traffic to follow. + +|Unit to Unit +|$01 (0x01) +|This control flag indicates any included control request is a unit-to-unit request. +|=== + ==== 3.3.2 PDU Message Header [listing] Below is the representation of the data layout for the P25 frame