Codan Radio P25 Training Guide - Manual (Page 68)

TRAINING GUIDE | P25 RADIO SYSTEMS
Chapter 4: Anatomy of the Common Air Interface Page 60
Format (Bit0 to Bit4 of Octet0)
%00011 Response Packet
%10101 Unconfi rmed Data Packet
%10110 Confi rmed Data Packet
%10111 Alternate Multi Block Trunking Header
SAP Identifi er
$00 Unencrypted User Data
$01 Encrypted User Data
$02 Circuit Data
$03 Circuit Data Control
$04 Packet Data
$05 Address Resolution Protocol (ARP)
$06 SNDCP Packet Data Control
$1F Extended Address -- for symmetric addressing
$20 Registration and Authorization
$21 Channel Re-assignment
$22 System Confi guration
$23 MR Loop-Back
$24 MR Statistics
$25 MR Out-of-Service
$26 MR Paging
$27 MR Confi guration
$28 Unencrypted Key Management message
$29 Encrypted Key Management message
$3D Non-Protected Trunking Control
$3F Protected Trunking Control