Most problems with pager communications seem to be caused by modem initialization strings. The modem must have the "interface to modem" and "modem to distant end" set to the same baud rate The rate, measured in bits per second (bps), at which the serial number port In TCP/IP and UDP networks, a port is an endpoint to a logical connection and the way a client program specifies a specific server program on a computer in a network. Some ports have numbers that are preassigned to them by the IANA, and these are known as well-known ports (specified in RFC 1700). Port numbers range from 0 to 65536, but only ports numbers 0 to 1024 are reserved for privileged services and designated as well-known ports. This list of well-known port numbers specifies the port used by the server process as its contact port. for the monitor server A server is a program running on a networked computer that processes requests from a client program, which is usually running on another networked computer. The client and server communicate using a protocol. For example, an FTP client communicates with an FTP server using an FTP protocol. will communicate with the modem.port for the monitor server will communicate with the modem., either 300 or 1200 baud. The modem must have "echo" disabled, "command textual responses" enabled, must return standard Hayes compatible responses, and must accept Hayes compatible commands. The system must be tested at 300 baud.
Once, you've established that the pager works, you can change the baud rate. Modems that return connection information other than "Connect ..." must have the extra connect information turned off. Modems that lock interface speeds must have that option disabled or locked to the desired connect speed (300 baud).