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8.6 How to configure the Serial PAD (Packet Assembler and Disassembler)
The NetComm NTC Cellular Routers include a PAD feature to allow the transport of arbitrary Async serial
data over the packet switched (IP) cellular network.
Specifically data received on the routers V.24 interface (serial port) can be encapsulated into TCP or UDP
packets and sent to a remote host, likewise data contained in TCP or UDP packets received from a remote
host may be forwarded to the routers V.24 interface (serial port).
This feature is further described in the document “NTCSeriesCellularRouterV250(AT)manual-V1-52”.
When configured through the browser based configuration interface this feature is configured using both
the “Data Connection” and “Modem” pages.
The following items may be configured using the “Data Connection” page:-
Remote Host
In client mode (router connects to host) this is the remote host to which the router will connect.
In server mode (remote host connects to router) the router will only accept incoming connections from the
specified host, if you specify 0.0.0.0 the router will accept incoming connections from any host.
Port
TCP/UDP port number to use
Local Encoding
See “NTCSeriesCellularRouterV250(AT)manual-V1-52” for details of this parameter, this is normally
disabled.
PAD Auto Answer
When enabled the router accepts incoming connections (enables server mode)
Revision 1.55 NetComm Limited
March 2009
42