Set Vmodem

Line Service Commands

Description This command associates a phone number with an IP address and TCP port. This enables an existing modem application to issue a dial command with a phone number. The phone number will be searched in this table and if an exact match is found, the associated IP address and TCP port will be used to establish the connection.

User Level Admin

Syntax set vmodem line .<number>* [echo onoff] [failure-string <string>] [host <config_host>] [init-string <string>] [mode automanual] [port <TCP_port>0] [respons-delay <time_ms>] [signals dcd always-highfollow-connection] [signals dtr always-highrepresent-dcdrepresent-ri] [signals rts always-highrepresent-dcdrepresent-ri] [style numericverbose] [success-string <string>] [suppress onoff]

Options echo

When enabled, echoes back characters that are typed in (equivalent to ATE0/ATE1 commands). Disabled by default.

failure-string

String that is sent to the serial device when a connection fails. If no string is entered, then the string NO CARRIER will be sent.

host

The target host name.

init-string

You can specify additional vmodem commands that will affect how vmodem starts. The following commands are supported: ATQn, ATVn, ATEn, ATS0, AT&Z1, AT&Sn, AT&Rn, AT&Cn, AT&F, ATS2, ATS12, and ATDS1.

See VModem Initialisation Commands in the IOLAN User’s Guide for a more detailed explanation of the support initialization commands.

mode

Auto mode establishes the connection when the line becomes active. You must supply the AT command or phone number that will start the connection; see Set Vmodem-Phonein the IOLAN User’s Guide for the command parameters to set the AT command or phone number.

port

The amount of time, in milliseconds, before an AT response is sent to the requesting device. The default is 250 ms.

response-delay

The port number the target host is listening on for messages.

signals dcd

Controls the state of the DCD signal. always-high= DCD signal will always stay high.

follow-connection= DCD signal will be high when an end to end connection is established and low when it is not.

Since the IOLAN does not have a physical DCD pin, you need to re-map the DTR or RTS signal to DCD to have the signal present. (see next option).

5500208-43 specifications

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