For converting modems to IP, virtual COM ports accept "AT" commands, dialed number is an IP address, connects to any TCP/IP endpoint. Use modem servers and share modem pools through DialOut/EZ virtual COM ports that make networked modems directly accessible.

On the client computer running DialOut/EZ
1. You add virtual COM ports using the DialOut/EZ Control Panel and configure them to use your modem server.
2. Your application uses DialOut/EZ virtual COM ports instead of local physical COM ports. If your application uses Windows modem devices, you can create them on DialOut/EZ virtual COM ports.
3. Your application opens, reads and writes virtual COM ports using the standard COM port API.
4. The DialOut/EZ Redirector automatically makes TCP/IP connections to the modem server and relays the virtual COM port data stream and control actions.

On the modem server
1. The server receives a TCP/IP connection from the DialOut/EZ redirector when a virtual COM port is opened.
2. The server automatically allocates an available modem for each DialOut/EZ connection.
3. The server converts the data stream and control signals and relays them to the modem.
4. The modem initiates a modem call on the PSTN. For servers with more than 8 modems, digital modems and PRI (T1/E1) lines are commonly used.

DialOut/EZ COM Port Redirector Features:
Extensive Platform Support
1. Windows 7/2008/Vista/2003/XP/2000/NT4/9x
2. Terminal Services, Citrix Metaframe
3. Native and virtual platforms, including Virtual Server and VMware
4. 32-bit or 64-bit version automatically installs

Scalable, Fast, Flexible
1. Up to 4,096 virtual COM ports for large applications
2. Automatic failover to backup modem servers
3. Entire data path is at kernel level, including networking and SSL
4. Low latency, no mode/context switch overhead of a Windows service
5. Always available, user login not required
6. Both outbound and inbound connections

Works with Your Choice of TCP/IP Modem Server
1. Supports COM Port Control Protocol (RFC 2217), Telnet, raw TCP
2. Uses only widely supported public TCP/IP protocols
3. Configurable to detect/respond to any server login prompt

Easy to Configure
1. Verifies access to server and supported TCP/IP protocols
2. Prompts for modem drivers for new virtual COM ports
3. Checks modem access with AT commands
4. Recommends/sets optimal redirector settings
5. Can replicate settings across any/all virtual COM ports
6. Manages IP routing table to maintain server access

Transparent to Applications
1. Extends server connection for COM port hand-off
2. Automatically restores interrupted network connections
3. Synchronizes COM port open with server ready condition
4. Optionally throttles data rate to COM port settings

Secure
1. Automatically logs in to servers, using multiple credential sources
2. Supports SSL/TLS connections using OpenSSL (32-bit versions only)
3. Settings and trace logs can be restricted to Administrators

Deployable
1. Installs interactively or via command line
2. Automatic failover to backup site license manager
3. Supports unattended command line install with privilege elevation
4. Uses DNS to resolve hostnames of servers
5. Configuration snapshot utility helps replicate settings during install
6. User-defined presets allow quick/controlled reconfiguration

The license of this software is Free Trial Software, the price is $100, you can free download and get a free trial.