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 DS1, TS2 manual Set Vmodem
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DS1, TS2 specifications

Perle Systems TS2 and DS1 are advanced serial-to-Ethernet devices designed to facilitate seamless integration of serial devices with modern IP networks. These devices serve as crucial tools for businesses looking to enhance their communication capabilities while leveraging existing infrastructure.

One of the standout features of the Perle TS2 and DS1 is their ability to support multiple serial protocols including RS232, RS422, and RS485. This versatile support allows businesses to connect various legacy devices to their networks, ensuring that critical equipment can still communicate effectively in an increasingly digital landscape.

The TS2 model is particularly noted for its dual serial ports, enabling simultaneous communication with multiple devices. This capability is invaluable for applications requiring real-time data transmission, such as remote monitoring and automated control systems. The DS1 model, on the other hand, is designed for single-port use, making it an ideal solution for smaller-scale operations or specific single-device connections.

Both the TS2 and DS1 incorporate advanced features such as configuration through a web interface, which simplifies setup and management. Users can easily access device settings and monitor performance metrics remotely, enhancing operational efficiency. These devices also support various network protocols such as TCP/IP, UDP, and ICMP, ensuring compatibility with a wide range of network architectures.

In terms of security, Perle Systems prioritize user data protection. The TS2 and DS1 offer features including SSL encryption and SSH protection, providing an added layer of security for sensitive information transmitted over the network. This is particularly important for industries where data integrity and security are paramount, such as healthcare and finance.

Additionally, the rugged design of both devices ensures reliable performance even in harsh environments. With extended temperature ratings and robust housing, the TS2 and DS1 can operate in diverse conditions without compromising functionality.

To summarize, the Perle Systems TS2 and DS1 provide a reliable and flexible solution for connecting legacy serial devices to modern networks. With their support for multiple serial protocols, web-based management, robust security features, and rugged design, these devices cater to a variety of industries looking to modernize their communication infrastructure while maintaining existing equipment. Whether for large-scale operations or smaller implementations, the TS2 and DS1 equip businesses with the tools needed for effective serial communication in an IP-driven world.
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