Pathway/iTS TCP and Terminal Programming Guide

Programming for Specific Terminals

Compaq NonStop™ Pathway/iTS TCP and Terminal Programming Guide—426751-001

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Using Dial-in Terminals

When dial-in terminals are in use, the terminal control process (TCP) issues a

CONTROL 11 operation (wait for modem connect) immediately after the terminal file is

opened. At terminal startup time, no program unit or data area is attached to the

terminal; therefore, the terminal is using a minimum of TCP resources while waiting for

modem connect. When the terminal is stopped, the terminal file is closed. The close

causes the modem to disconnect if no other process has the terminal file open.