VEGA Phoenix PSI Data Fax Modem - Manual (Page 73)

Special Functions
692302 5-3
5 Special Functions
5.1 Permanent Line
The PSI-DATA/FAX-MODEM/RS232 modem supports 2-wire permanent line
operation.
– DIP switches for master/slave selection
– Up to 33600 bps/115200 bps (bidirectional, full duplex)
– Automatic connection/continuous line monitoring
– TBR15 approval
– Transmission via its own telephone cable (2-wire) over a distance of up to
20 km (12.43 mi.)
The device is approved for 2-wire permanent lines according to TBR15, i.e., you
can rent a permanent line for a service provider (e.g., Deutsche Telekom) or use
your own private 2-wire line to then establish a point-to-point connection via this
line.
Setting Permanent Line Operation
The settings for permanent line operation, e.g., data save and choice of
transmission speed must first be set and saved with the AT&W command, as the
modem cannot be parameterized in permanent line operation via the RS-232
interface.
DIP Switches
DIP switch 3 should be set first to specify which modem should operate in
"Originate Mode" (ORG) and which modem should operate in "Answer Mode"
(ANS). One of the modems should be set to ORG mode and the partner modem
should be set to ANS mode.
• Set DIP switch 3 to the desired mode:
Permanent line operation is configured via DIP switch 1.
• Set DIP switch 1 to the "ON" position.
As soon as the power is switched on, the PSI-DATA/FAX-MODEM/RS232 starts
automatic permanent line operation and establishes a connection with the partner.
DIP 3 = OFF ANS mode
DIP 3 = ON ORG mode