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Chapter 3 - Software Loading and Configuration
RF300E/RF310E 17
Call Control Parameters
ü Persistent DTR Dialing_______________________________________
A high DTR (Data Terminal Ready) signal on the Command port indicates that your computer or
terminal is ready to communicate with your RASFinder. DTR normally goes high when a
communication program starts or is ready to dial. Persistent DTR dialing enables the RASFinder to
automatically redial the number stored in memory location 0 whenever DTR is high and the serial port
does not have an active call. You may enable or disable this feature.
ü Calling Line Identification_____________________________________
Identifies whether the two endpoints of a connection are enabled or disabled. Since RING
messages only appear for ISDN data calls, the CLI feature does not define a means of conveying
Calling Party information to the terminal for ISDN voice calls. The CLI information is only included
with the first RING message for a given incoming call and appears as follows:
RING
FM: 5552000 TO: 5551000
If the Calling Party Number information is not included in the incoming SETUP message, the RING
message appears as follows:
RING
TO: 5551000
If the Called Party Number information is not included in the incoming SETUP message, the RING
message will appear as follows:
RING
FM: 5552000
If neither the Called Party Number, nor the Calling Party Number is included in the incoming SETUP
message, the RING message will contain no additional information.
ü Auto Protocol Detection -
Identifies that automatic protocol detection is enabled or disabled for an ISDN data call. The default
setting is 1, which enables the Auto-Protocol Detection function.
ü Auto Answer Data Calls ____ __________ Rings to Answer__________
Select Auto Answer if you want your RASFinder to automatically answer all incoming data calls (this
option does not affect the analog port). The Rings to Answer number, in the range of 1 to 255,
selects the number of rings the RASFinder waits before answering an incoming call. The default is
one ring.
Data Control
ü Data Protocol _______________________________________________
The data protocol, also known as the B-channel protocol and the rate adaption protocol, is the
“language” that is spoken over each 64 Kbps channel between two ISDN devices. The devices on
both ends of the ISDN link must use identical data protocols.
ü Dialing Method _______________________________________________
Select either the “Enbloc” or the “Overlap” dialing method for use when establishing a data call. Your
ISDN service provider determines the dialing method. The en bloc method is used for most ISDN
dialing; however, you can select the overlap method if you are working with a private network.