Line Service Commands

Set Vmodem

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).

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Perle Systems 5500208-43 manual Set Vmodem
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5500208-43 specifications

Perle Systems 5500208-43 is a highly advanced device in the realm of serial device connectivity and management. Designed to facilitate seamless communication between legacy serial devices and modern network infrastructure, this device serves as a reliable solution for numerous industrial and commercial applications.

One of the main features of the Perle 5500208-43 is its ability to connect up to 16 serial devices simultaneously over a single Ethernet connection. This multi-port capability is made possible through its robust architecture, allowing businesses to expand their network without the hassle of complex cabling. The device is equipped with 16 RS-232 serial ports, ensuring compatibility with a wide range of devices including printers, sensors, and legacy machines.

In terms of technologies, the 5500208-43 utilizes Perle’s advanced IOLAN technology which offers a host of features designed for efficiency and reliability. This technology not only ensures high-speed data transmission but also enables users to easily manage and configure the device through a user-friendly web interface. Furthermore, the device's support for various protocols, including TCP/IP, UDP, and SNMP, provides significant flexibility, allowing integration into existing IT infrastructures with ease.

Another notable characteristic of the Perle 5500208-43 is its rugged design. Built to withstand harsh environments, it is perfect for deployment in industrial settings where exposure to dust, humidity, and temperature variations can be a concern. The device supports industrial-grade power inputs, including PoE (Power over Ethernet), providing added convenience in installation and maintenance.

Security is also a top priority in the design of the 5500208-43. It incorporates features such as secure socket layer (SSL) encryption and user authentication to ensure that data remains protected during transmission. This makes it particularly suitable for applications requiring secure data handling, such as in healthcare, finance, and government sectors.

Additionally, the Perle 5500208-43 is backed by a solid warranty and technical support, giving customers peace of mind that they are investing in a reliable product. With its combination of versatility, durability, and advanced technology, this device stands out as a crucial component in bridging the gap between traditional serial devices and modern network systems.
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