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User manual Airlink, model RJ-11

Manafacture: Airlink
File size: 1.75 mb
File name: 88ab93eb-b380-4a10-96db-2d7ed26be0a2.pdf
Language of manual:en
Free link for this manual available at the bottom of the page

manual abstract

•Outgoing Network Connection: Enables an outgoing connection to the specified host. •Outgoing Telnet Connection: Enables an outgoing telnet connection to the specified host. •Modem Service Options: When Modem Service is selected, you may also configure the Source TCP Port. In most cases, the value used for the source port is arbitrary and you can leave this field set to 0 for “any”. However, if your server or firewall has specific requirements you may specify an explicit source port number in the Source TCP Port field. If this port is not available when the TCP service starts up, an error will occur and the TCP service will reset and try again. Phone Number Translation This table can be used to translate phone numbers into IP addresses or Hostnames. If the attached device dials one of the specified telephone numbers, the corresponding IP address and port are used to make the TCP connection. Note that all non-numeric characters except the “,” (comma) in the phone number are ignored. When modem emulation is enabled, the Host RJ-11 IP Gateway can detect the phone number from ATD commands. Although the IP address of the remote host can be embedded directly into the ATD command, certain devices can't always be easily configured to do this. FIGURE 6. Host RJ-11 IP Gateway: Phone Number Translation 18005551212192.168.13.1005004Define ProtocolSettingsdefault.eairlink.com5003SettingsEdit Protocol5551212* The Default Translation entry is used if the dialed phone number is not found in the list. (The dial backup number is not used in the Host RJ-11 IP Gateway.) The phone number table has a number of features to ease initial configuration. When an attached device dials a number that is not in the table, the device server creates a dummy entry in the table. This entry will consist of just the phone number. Until you fill in the remainder of the entry (IP Address/Hostname and Port) and save it, this entry will not be used. Once you have created and saved an entry in the table, a link to the associated entry on the Protocol Settings page appears on the right. If the protocol is not yet defined, this link, “Define protocol”, will create a new entry on the Protocol Settings page, otherwise the link will be “Edit protocol”. The translation table screen allows you to add up to 5 new entries at a time. A total of 64 entries may be configured including the default entry. In the example above, if the attached device dials 18005551212, the port will be connected to the host at on TCP port 5004. This host is not yet defined, so it will use the default TCP protocol. If the attached device dials any other number, the port will be connected to default.eairlink.com:5003, whose protocol is defined. And the terminal has actually dialed 555- 1212, generating an automatic, but not yet saved, entry. Network Translation The Host RJ-11 IP Gateway is capable of accepting incoming TCP connections and redirecting them to remote TCP hosts. This functionality is called network translation and behaves much like a TCP “pipe” between two systems. The Host RJ-11 IP Gateway also uses Network Translation to allow connections to the web-base interface on a port other than the http protocol defined port of 80 which is frequently blocked by cellular carriers. FIGURE 7. Host RJ-11 IP Gateway: Network Translation It is also possible to modify the network protocol traveling through the TCP pipe by using the Protocol Settings page to define the remote host's protocol requirements. The most common use for this functionality is to add SSL encryption to an incoming TCP connection prior to sending it along to the remote host. The Network Translation table is used to define network mappings for TCP pipes. You must first specify the incoming TCP port to which your device or application will connect. Then, you must specify the outgoing hostname and destination TCP port for the TCP pipe. You can also specify the source TCP port for the outgoing TCP connection. Usually, this should be set to 0 to allow automatic selection of the source port. However, if you have a firewall that imposes limits on source TCP ports then you may need to set this to something specific. Note that if you specify something other than 0, you will be limited to only 1 TCP pipe at-a-time for any given destination port. Protocol Settings For each host (peer) you will make an outgoing connection to, you need to specify the protocol options used for that host. For each host, select the Host from the “Edit settings for a different peer” selection box. Select “Add a new peer definition” link to add a new host. FIGURE 8. Host RJ-11 IP Gateway: Protocol Settings The hosts are identified by their IP address or Hostname and TCP port. You may also specify wild cards. Specific host names and/or port numbers take precedence over the wild cards. An asterisk for the IP address/hostname (for instance “*:443”) means any other host when connecting on port 443. An asterisk for the port number (for ...

Other models in this manual:
Network Equipment - RJ-11 (1.75 mb)
Network Equipment - RJ-11 (1.75 mb)
Network Equipment - RJ-11 (1.75 mb)
Network Equipment - RJ-11 (1.75 mb)


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