There appears to be a disconnect between "ANT Message Protocol and Usage, Rev 5.1" and "ANT+ Managed Network Document – Common Data Pages, Rev 3.1" pertaining to channel ID structures. The byte ordering is different -
"ANT Message Protocol and Usage, Rev 5.1" layout:
Device ID LSB, Device ID MSB, Device Type, Transmission Type
"ANT+ Managed Network Document – Common Data Pages, Rev 3.1" layout:
Table 6-19. Common Data Page 86 – Paired Devices
Device ID LSB, Device ID MSB, Transmission Type, Device Type
Please clarify or correct the Common Data Pages document.