Multitech ProxyServer MTPSR1-202ST, Руководство пользователя, Страница: 36 / 142

ProxyServer User Guide
36
MTPSR1-202ST
Call Control Parameters
Persistent DTR Dialing - Data Terminal Ready (DTR) normally goes high when a communication
program starts or is ready to dial. A high DTR on the serial port indicates that your computer or
terminal is ready to communicate with the ProxyServer. The Persistent DTR Dialing function built into
the ProxyServer enables the ProxyServer to automatically redial the telephone number of the ISDN
service provider whenever DTR is high and there is no active call on the serial port. You can either
enable or disable this feature (the default for this function is “disabled” or unchecked).
Note: You can use the key combination, “Alt-P” to check or uncheck this function.
Calling Line Identification (CLI) - When you check this function, the ProxyServer identifies (for
ISDN data calls only) whether the two endpoints of a connection are enabled or disabled for the
purposes of RING messages. If the Calling Party Number is included in the incoming SETUP
message for a given call, the RING message will display it, together with the Called Party Number, in
the following format: “FM: 5552000 TO: 5551000.” If the Called Party Number is not included in the
SETUP message, the RING message will show only the Calling Party Number as follows: “FM:
5552000.” If neither number is included, the RING message will contain no additional information.
The default for this parameter is “enabled” or checked. Note: you can use the key combination
“Alt-D” to check or uncheck this function.
Auto Protocol Detection - You should leave this function disabled (unchecked) because we set the
Data Protocol in the Data Control group to “MLPPP” and do not use any of the other protocols listed
there.
Auto Answer Data Calls - You can enable this function if you want your ProxyServer to answer
automatically all incoming data calls (this option does not affect the analog port). If you do enable the
Auto Answer function, you should also set the Rings To Answer function unless you want to leave it at
the default selection which is one ring before it answers. (Selecting either “0” or “1” causes it to
answer after the first ring.)
Data Control
Data Protocol - As mentioned above (in Auto Protocol Detection), we leave this function set to
MLPPP, which uses both B channels (each at rates of up to 64 Kbps per channel) providing an
aggregate data transmission speed of 128 Kbps, maximum.
Data Compression - You should leave this function set to the default, which is “None.”
Dialing Method - The default is “Enbloc,” which is used for most ISDN dialing; however, if your
ProxyServer is on a private network you can switch to the “Overlap” dialing method for establishing a
data call on the ISDN line.