To configure dynamic DNS:- Click Enable . Select the Dynamic DNS service that you wish to user . Enter your dynamic DNS account credentials . Click Save . 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) These items may be configured separately for each of the 4 connection profiles. The following items may be configured using the “Modem” page: Baud Rate The serial (V.24) port baud rate. By default the serial line format is 8 data bits, No parity, 1 Stop bit. See “NTCSeriesCellularRouterV250(AT)manual-V1-52” if you need to change the serial line format. Inter Character Timeout The PAD will buffer any bytes received from the serial port until either 512 bytes have been received or no bytes have been received for “Inter Character Timeout” milliseconds, it will then send any bytes in the buffer to the remote host. ID When the ID field is not blank (empty) the defined ID will be sent to the remote host as follows: For UDP the 1st bytes of each datagram sent will be set to the contents of the ID field, data follows immediately after the ID; for TCP the ID is transmitted once immediately after the connection is established. Ignore String When the “Ignore String” field is not blank (empty) the router will strip any character sequence that matches the “Ignore String” from the data stream received from the serial port. Connect To Determines how the router behaves when it receives an “ATD” command on the serial port. • Profile Connect using “Data Connection Profile” • Circuit Establish a circuit switched data connection • Packet Connect to cellular packet network in PPP pass through mode • DialString Examine the dialed digits and connect to Profile, Circuit or Packet as appropriate DTR Action Determines how the router responds to change of state of the serial port DTR line • Ignore Take no action • Command High to Low transition of DTR causes the router to enter command mode (does not end call) • Hangup High to Low transition of DTR causes the router to end call and enter command mode • High AutoDial Low to High transition of DTR causes the router to dial the Auto Dial Number, High to Low transition of DTR causes the router to end call and enter command mode • Low AutoDial High to Low transition of DTR causes the router to dial the Auto Dial Number, Low to High transition of DTR causes the router to end call and enter command mode • Low Pass To ATPort When DTR is low pass all AT commands directly to internal cellular data engine. DCD Action Determines how the router controls the state of the serial port DCD line • Always On DCD is always on • Connect On DCD is on when a connection is established in response to an ATD command or DTR auto dial. • Always Off DCD is always off • PPP On DCD is on when the router has established a PPP session with the cellular network Flow Control • Off Serial port flow control off • Hardware Serial port uses RTS/CTS flow control RI Action Determines how the router controls the state of the serial port RI line • Always On RI is always on • Incoming Ring RI is on when an incoming connection request is received. • Always Off RI is always off Circuit AutoAnswer Rings Sets the number of incoming rings after which the router will answer incoming circuit switched data calls Auto Dial Number Sets the number the router will dial if DTR Auto Dial is enabled ad DTR changes state 9 Routing Features 9.1 How to configure PPTP Client This page can be accessed by clicking on the PPTP link. There are a couple of steps that you need to take before obtaining a PPTP interface: 1 Get connected on to the Cellular network: To do this click on the 'Data Connection' link and in the PPP Profile Connect ...
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