Boca Systems PRO/6, Installation Manual

Page: 45 / 84

45
Answering Calls
To automatically answer incoming calls, S Register 0 must be
set to a non-zero value (as with asynchronous auto-answering).
Once a call has been answered there is no means of returning to
asynchronous mode apart from hanging up the modem. This
will occur if the carrier is lost for a period in excess of the time
defined by S Register 0 or if DTR is lowered after the &D2
command has been issued.
Synchronous Mode 2
Synchronous mode 2 is specifically designed for use with
dedicated synchronous terminals. The phone number to be
dialed is stored in the modem, the synchronous terminal
causing the modem to dial by asserting the DTR signal.
When the terminal asserts the DTR signal (DTR makes an OFF-
ON transition), your modem will dial stored phone number
zero. The phone number may contain dial modifiers. See the
Command Descriptions chapter of this guide for details on the
&Z
command.
Before connecting your modem to your synchronous terminal,
the modem must first be configured using an asynchronous
terminal or computer.
The Sample Setups section of this manual details a common
configuration for synchronous mode 2.
Synchronous Modes