Virtual COM port Redirector with modem command set.  Emulates a modem.
Select virtual COM ports with modem emulator
COM ports with modem emulator control panel
Trace logs of virtual com ports with modem emulator
Software modem emulator advanced features

COM/IP® Virtual Modem Redirector

Tactical Software

Regular price $100.00 Sale

Version 4.10 * FINAL RELEASE *
Supported for Windows 11 • Server 2022  see details

Permanent license
Technical support included

Do you need active port capacity not listed here?  Contact Us

Download 30-day Free Trial
Windows restart not required


Using the COM/IP Redirector

In the COM/IP Control Panel:

  • Choose the COM port numbers for virtual COM ports
  • Optionally, install Windows modem devices on virtual COM ports

In the Windows application:

  • Open any available virtual COM port
  • Use the modem AT commands to configure and "dial" an IP endpoint
  • Example: ATDT011012123001[33333] connects to TCP port number 33333
  • Read/write serial data, as if a modem had made the connection
  • Close the virtual COM port to terminate connection

For more, see the COM/IP Quick Start Guide.


Is the 30-day trial software a full version of COM/IP?

Yes, for up to 256 active ports.  Download and run the COM/IP installer, leaving the license key blank to begin the trial period.

Can I extend my trial period past 30 days?

Yes, contact us.

Are software updates and tech support free?

Yes. Your purchased license key permanently enables the software and updates are available for download at no charge.  We provide expert technical support at no charge, before and after your purchase.

Can COM/IP call a real modem?

No.  As a modem emulator, COM/IP uses TCP/IP network connections.  It does not use phone lines in any way.

Can I create more virtual serial ports than I use at one time?

Yes, you can create and configure up to 4,096 virtual ports.  Your COM/IP license key controls only the number of simultaneously active (open) ports.

How can I tell if I should be using the Serial/IP Redirector instead?

If your application does not use modem commands, use the Serial/IP Redirector, which connects to preconfigured TCP/IP endpoints.