6.4.4 Service Discovery
The router/end device requests Node Descriptor
during the initialization
procedure before finding and binding to discover the Capability
Information
and other details of the Coordinator
device in
the network. For more details, refer to 6.1.3 Zigbee Device
Profile (ZDP).
Packet #28
and #36
show the Node Descriptor
Request
and Node Descriptor Response
from the router and
coordinator devices, respectively. Packet #40
shows the APS:
ACK
by end device for Node Descriptor Response
from
Coordinator
.
Node Descriptor Response
from a
Coordinator
device. Under ZigBee Device Profile
field, the user can see the following:Capability Information
of the coordinator nodeMax Buffer Size
Server Flags
Descriptor Capability Field