Maxon Telecom MM-6864 User Manual

Page of 65
MM6854/64 Dual Band GSM Data Modem
ME 820047
Issue 1.0
Page 48
03/00
8.1.11 Select Flow Control and Software (XON/XOFF)
Note: Some applications do not use Software Flow Control, therefore set flow control to Hardware.
In whichever case, the hardware or the software must provide flow control otherwise data will be lost.
8.1.12 RS-232
In order to turn on the modem, Pin 4 (DTR) must be pulled high.  This pin will normally be high on a
PC COM port when the COM port is available.