Establishing a Local Session

The MERLIN Messaging System has an RS-232 serial port capable of supporting direct connection to a terminal device, such as a PC, with a serial port at a line speed of 9.6 kbps for Release 1 or 1.1 and 38.4 kbps for Release 2 or later. The connection is based on an 8-bit word, no parity, no flow control and autobaud capability. An RS-232DW8 cable with a maximum length of 25 feet can be used to connect the terminal to the module.

You need to use the adapters specified below:

  • MERLIN Messaging Serial Port
  • 25-foot DW8 Cable
  • AT&T 355AF adapter
  • Male DB25-to-female DB15
  • PC/Laptop COM Port

The MERLIN Messaging System supports one terminal session at a time. If a session is in effect through the Remote Maintenance Device (RMD) at the time the serial connection is being established, the MERLIN Messaging System ignores all input from the serial connection.

When the hardware has been connected you must use a terminal emulator (such as Windows Hyperterminal) to start your terminal session.

The MERLIN Messaging System outputs startup messages to the serial port at a speed of 9.6 kbps for Release 1 or 1.1, and 38.4 kbps for Release 2 or later, prior to the loading of the voice messaging application. These messages can be captured only if a serial type device is attached to the serial port. The startup messages include the following information:

Once the startup process is completed, you can log into the MERLIN Messaging System.

Procedures
Setting Up Windows Hyperterminal for a Local Session