Const
const enum with sole purpose of avoiding "magic numbers" in code for well-known values
Zigbee 2007 and later.
The first fragment includes a two-octet length field preceding the fragmented payload.
apsFragmentPayloadSize: Number of bytes carried in each APS fragment after the first one. TODO: verify
no NWK security
const enum with sole purpose of avoiding "magic numbers" in code for well-known values