
AMX AV/IT Administrators Guide
Rev. 1.0 (7/29/2014) www.amx.com Page 12
User defined virtual devices
NetLinx Module Virtual Devices
Duet Module Virtual Devices
Numbers
Ports are interfaces within a device (multiple ports per device) The number of ports depends on the
device.
Ethernet Transport of ICSP
In Ethernet transport ICSP packets are encapsulated in the data payload and forwarded from and to port
1319. All ICSP packets are forwarded over IP based on the ICSP Routing table. At each ICSP hop point
the ICSP packet is completely de-encapsulated and forwarded. No previous IP information (header,
source, etc.) is forwarded with the ICSP packet.
ICSP packets tunneled over Ethernet may follow a logical topology different from the physical topology.
In the diagrams below the highlighted EXB-Com2 is on the same subnet as the System #7 Central
Controller, but is logically bound to the System #1 Central Controller. Communication from the System
#7 Central Controller to the EXB-Com2 D:P:S (5101:1:1) will travel from the System #7 Central Controller
to the System #1 Central Controller and then will be forwarded to the EXB-Com2
Ethernet Physical Connection
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