Zmodem is a fast, reliable and popular 'file transfer protocol' - a program for transfering files from one computer to another over a serial connection. Because of its speed, robustness and easy of use, Zmodem has replaced the formerly common protocols 'Xmodem' and 'Kermit' in most applications.
ZMODEM is a file transfer protocol developed by Chuck Forsberg in 1986, in a project funded by Telenet in order to improve file transfers on their X.25 network. In addition to dramatically improved performance compared to older protocols, ZMODEM also offered restartable transfers, auto-start by the sender, an expanded 32-bit CRC, and control character quoting, allowing it to be used on.
Zmodem is generally the best protocol to use if the electronic service you are calling supports it. Zmodem has two significant features: it is extremely efficient and it provides crash recovery. Like Ymodem-g, Zmodem does not wait for positive acknowledgement after each block is sent, but rather sends blocks in rapid succession.

ZMODEM & Kermit File Transfer Client and file transfer Server

Serial Communication Software, unattended file transfer with zmodem, kermit protocol in Windows and DOS. Includes Client and Server. Scripting serial and tcp data communication and file transfer.

Zmodem Protocol Program Free

ZMODEM software escapes ZDLE, 020, 0220, 021, 0221, 023, and 0223. If preceded by 0100 or 0300 (@), 015 and 0215 are also escaped to protect the Telenet command escape CR-@-CR. The receiver ignores 021, 0221, 023, and 0223 characters in the data stream. FileLink 3000 A24 Brings the power of mainframe oriented batch, unattended file transfer operation to the everyday world of asynchronous modem protocol (Xmodem, Zmodem, etc.) and Internet FTP communications. Based on Serengetis renowned IBM 3780/2780 RJE and 3770.

Automated and unattended file transfer with Zmodem and Kermit protocol. KERMIT and ZMODEM File Client & Server, Serial Communication Software, Windows and DOS.

ZMODEM & Kermit File Server

Retrieve files from server using ZMODEM file transfer protocol.

Retrieve files from server using KERMIT file transfer protocol.

Scripting serial ports and tcp data communication and file transfer. Automated and unattended file transfer with Zmodem and Kermit protocol.

Are you looking for automated and unattended file transfer with ZMODEM protocol ?
Are you looking for a matured and reliable ready to use ZMODEM and KERMIT file server ?
Are you looking for a matured and reliable ready to use ZMODEM and KERMIT Client ?
Areas of application

ZMCS - File Server and Client

What is the purpose of this software ?
ZMCS(ZMODEM Client & Server ) is a file transfer utility for unattended, script-driven file transfers using the ZMODEM protocol or the KERMIT protocol between two computers or computer to machine.

Add easily KERMIT or ZMODEM file transfer capabilities to any existing application!

Ready to run! Collect any files from distance. Collect measurement data files, account files, text files, data base files, binary files and any other files using optimized well known file transfer protocols ZMODEM and KERMIT.

ZMCS is able to run asynchronous modem dial up connection and file transfer automated and unattended in background.

Use Modem, ISDN (CAPI) or TCP/IP to connect to the ZMCSserver and upload or download files (third party servers also supported).

ZMCS can establish a connection using an asynchronous Modem or a Direct Link (serial cable) or ISDN (CAPI) or TCP/IP and send and receive text and binary files using ZMODEM or KERMIT file transfer protocol.

ZMCS executes as a console program and can act as server or client working completely in background. In server mode it waits for a client to connect and handles the requests for sending or receiving files. In client mode it connects to a server and sends or retrieves files to or from the server.

In client mode it runs unattended until all files are sent or received. It then ends autonomous. In server mode it accepts client connections, receives files, transmits files and may be terminated, if no more needed, by an application or by the user.

ZMCS is no island solution. Both, the client and the server can communicate with third party software (e.g. Hyperterminal). So access is not restricted between ZMCS application but third party software can easily connect to the ZMCS Server and the ZMCS Client can connect to third party server when no other special specifications requiered (like login protocols etc.).

An ideal solution to synchronize files and directories between remote machines. Automate synchronization and backup jobs with scripts.

Features List

Client or Server mode
up to 255 simultaneous file transfer sessions
ZMODEM protocol as default
ZMODEM 'crash recovery'
KERMIT protocol
Support for Text and Binary files
Copy mode and Move mode. Move mode deletes files after successfully transmitted
Restricted file and directory access (see option /W)
User Control, Login (see option /XL)
Job Files ~ Script
Scripting data communication and file transfer (Windows, Linux)
Transmits files also with third party applications e.g. Hyperterminal
Expandable
Customization offered
64-Bit customization offered
Scripting Serial port, TCP/IP and ISDN data communications and file transfer.
Automated and unattended file transfers with Zmodem and Kermit protocol.
Backup and synchronize files and directories through serial, ISDN and TCP/IP connections.

Especially for Serial port communications

COM1, COM2 to COM255 and/or ttyS0, ttyS1, ..
Direct link connection using serial cable
Dial-up connections using Modem (Hayes compatible)
Dial-up connections using USB Modem
Dial-up connections using GSM/GPRS Modem
Baudrate, up to 921kbps (hardware and OS dependent)
Any PC (each license) can start more than one instance of a server and/or client at a time

Especially for TCP/IP

Each TCP Server instance serves one client at a time
Any PC (each license) can start more than one instance of a server and/or client at a time

Especially for ISDN

Each Server instance serves one client at a time
Any PC (each license) can start more than one instance of a server and/or client at a time

How is it best started ?
ZMCS is usually started with a Batch file, a Script, Windows Autostart, as a scheduled task or from within a Windows application and runs completely and unattended in background. The client ends when done. The server runs endless until closed by the user or an application.

The software provides status information. Kaspersky virus removal for mac. All status information and printouts can be routed into a log file (informational mode) or disabled (quiet mode). A low level data trace function is offered as well.

ZMCS runs completely hidden and works in background without any visible window.

What commands and options does it offer ?
The ZMCS software is driven by command line parameters:

Examples:Return Codes:

Zmodem Protocol

A complete description of functions and parameters and more samples can be found in the Manual.

Do I have to develop anything or do I need a SuperCom software in order to execute it ?
No, ZMCS is a ready to run application offering the described funtionality. You just copy it to the station you want to use it.

Zmodem Protocol Source

Does it support binary files ?
Yes, ZMCS can transmit text files and binary files.

Is it possible to run invisible in background ?
Yes, the ZMCS application can run completely hidden and in background without any visible window.

What security features does it offer ?
Restricted access to files
ZMCS can be configured to