GTE Omni Si Database Technical Practices Manual
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TL-130400-1001Record Code AQ:17.4 Record Code AQ, Figure 17.4, provides a list of parameters Data Systemapplied to the remote end of a data call. These parameters Asynchronous Porttemporarily override the pre-existing parameters of the remote Set/Read Listend of a data call while a data call is connected to/from the port specified on this record code. This allows the port specified in this record code to control the configuration of its call partner on both incoming and outgoing data calls. The remote port may be reconfigured while the call is set up. It is restored to the original configuration when the call is disconnected. This option is normally implemented for host ports; however, any asynchronous or synchronous (X.25) port can be assigned this record code. The following rules apply for this record code: l Any port defined in columns 12-l 6 of this record code must have an entry on Record Code CP. l If the port is asynchronous, it requires an entry on Record Code AP. l If the port does not reconfigure the port at the remote end, an entry on this record code is not needed. The values assigned to the options defined on this record code depend on the requirements of the device which is attached to the port. For parameters that do not need reconfiguration at call setup, enter a dash in the field. T---------T---------------------------------------------------------------~---~IIiIIIIIIIIIIII9II 171819101112131416161718191011121314151617181910111213141516171819101112131 10’c-+-+-c-c-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-~L--I1618101~l~l I I I l I I I I I I I I I I I I I I I I I I I I I I I I I I1 f I IL-~-I-~-L-L-I-I-I-~-~-~-~-*-1-1-1-1-~-*-1-~-*-~-*-~-~-*-*-~-~-~-~-~-~-*-*-~ L-2 Figure 17.4Record Code AQ: Data System Asynchronous Port Set/Read List Data Sheet SVR 5210 8167D-359
TL-130400-1001 Table 17.4 Entry Fields for Record Code AQCOL.COL.VALID NO. NAMEENTRIESCOMMENTS 12PEC0 = PEC number This field determines the location of the port. .~.What PEC is this card located in? 13.r GroupA-D = group Which group (A, B, C, or D) within the PEC is numberthis card? 14-15Card Slot00-l 0 = slotnumberWhich card slot within the group is this card? 16Circuit NumberO-7 = assignedWhich circuit on the card is being used? circuit number 17-19Escape fromO-l 27Data TransferAssign the ASCII character that allows a user Characterto stop the flow of data. (ASCII Value)-This parameter specifies the character that will be received to indicate that the terminal user wants to enter command mode. 0 = escape not allowed 1 = DLE character initiates escape 2-l 27 = decimal representation of selected ASCII character (see ASCII character set table ) -This is X.3 parameter 1. 20PAD Echo 0 = no echoEnter 1 if PAD echo is provided. 1 = echo allowed-This field determines the default value of echo. If this parameter is enabled, then echo will occur in data transfer mode; otherwise, no echoing will occur in data transfer mode. Generally, this field should be set to N for full duplex and Y for half duplex. If station equipment displays two of each character, set this field to N. If station equipment does not display information that is keyed in, then try setting this field to Y. -PAD echo provides for all input characters to be echoed back to the device attached during the data transfer mode -This is applied only to full-duplex devices. -This is X.3 parameter 2. D-3608187SVR 5210
TL-130400-1001Table 17.4Entry Fields for Record Code AQ (Continued)COMMENTS device to begin transmission of a packet. 0 = user cannot initate data forwarding 1 = alphanumericcharacters (A-Z,a-z,O-128 = number4 = characters ESC,BEL,ENQ, ACK 8 = characters 16 = characters 32 = characters 64 = a character inserted by the user in text column 0 or 1, which is not any of the characters listed in O-32 above Indicate the allowed intervals between the user input characters. l-255 = number-This field specifies the default value of the increments-This timer clocks the time between characters. If this timer expires, all of the characters buffered up to that point will be forwarded in a packet. -Zero disables this timer. -If this interval is exceeded, the timeout causes the forwarding of a data packet. -The time is selected in 50-ms increments, so a selection of 2 = 100 ms. -This is X.3 parameter 4. 27 Ancillary Device0 = disables flowIndicate whether or not the PAD (Packet Flow ControlcontrolAssembler Disassembler) can temporarily 1 = enables flowslow the output from this device when the PAD controlis unable to receive more data. -This parameter sets the default value of device flow control. -If this parameter is marked 1, the PAD can flow control the device. -Flow control is used when the PAD cannot process data fast enough or when the amount of characters buffered is too great (due to the transmission condition or network slow- down). SVR 5210 8187D-361
TL-130400-1001 Table 17.4 Entry Fields for Record Code AQ (Continued)COL.COL.VALID NO.NAMEENTRIESCOMMENTS 27Ancillary Device0 = disables flow-The PAD sends a control-S, signaling the (cont’d) Flow Control controldevice to stop transmission to the PAD. 1 = enables flow Should the device continue to transmit and%. controloverrun the buffer, data will be lost. When the PAD becomes unblocked, it transmits a control-Q. Transmission of this character continues until the device starts sending data. . .The PAD then signals the connected device to continue data flow. -This field is dependent upon column 35 being set to Y. -This is X.3 parameter 5. 28-29Break Options 0This field determines the action to be taken by 1an APM when a user depresses the break key 2at the device attached to the APM. 80 = nothing ;i1 = send an interrupt packet (X.25 special packet) to the PAD 2= send a reset packet (X.25 special packet); this can cause data to be lost. 8 = escape from data transfer mode 21 = send an interrupt packet (X.25 special packet) plus indication of the break message to the PAD; also discard the output to the user U-E)-This is X.3 parameter 7. 30-31PaddingO-31 = number ofAssign the amount of padding characters, Characters After charactersinserted after a carriage return is depressed. Carriage Return inserted-Printing devices need sufficient time for the mechanism to perform the carriage return. -This parameter sets the number of null characters to wait before continuing to send any other characters. NOTE: There are no real characters sent. The APMSPM waits the amount of time it would take to transmit those characters. 8187SVR 5210
TL-130400-1001CQL.NO. Table 17.4Entry Fields for Record Code AQ (Continued) COL.VALID NAMEENTRIESCOMMENTS 32-34Line Width 0 = functionAssign the the number of output characters to performedbe printed per line at the user device. .=.automatically-This parameter sets the default value of line l-255 = number . . .folding. This determines the number of of characters percharacters to transmit before an automatic linecarriage return/line feed is sent. This causes long lines to fold or wrap to the next line. If . ._this field is set at 0, this function is disabled. A backspace will cause the internal counter to be decremented by one for each backspace character received, and carriage return will reset the counter. This field is normally set to 0 because most station equipment does this automatically. Otherwise, standard line lengths are 80 or 132 characters. -This is X.3 parameter 10. 35Pad Flow Control0 = PAD flowIf selected, this field determines that the APM control not allowedwill send a signal when the device attached to 1 = PAD flow it is temporarily unable to receive more data. control allowed-This field sets the default value of flow control. -If this field is marked 1, the device and/or user of the device can flow control the PAD. This disallows transmission of control-S and control-Q. -If this field is marked 0, the device cannot flow control the PAD. However, the device can transmit flow control characters through the network. -Control-S stops the PAD and control-Q ends flow control. This is commonly done by printers and users that get behind and need to catch up. -This is X.3 parameter 12. 36Line Feed After 0This option allows automatic insertion of a line Carriage Return 1feed after any carriage return is transmitted. (CR)4-This parameter sets the default LF (Line5Feed) insertion. This causes the PAD to insert 6an LF character into the transmission stream. or0 = no line feed inserted 7 = number1 = insert line feed after each carriage return sent to the user terminal (DTE) as data SW 52108187D-363
TL-130400-1001Table 17.4Entry Fields for Record Code AQ (Continued)COMMENTS 5= combination of (1) and (4) 6= insert line feed after each carriage return sent from the user terminal as data, plus to the user terminal as an echo 7= combination of (1) and (6) -This field will usually be set to 0 or 1. If the user’s terminal is double spacing lines, this field should be changed to 0. If the user’s terminal is overprintinglines, this field should -This parameter sets thedefault value ofline feed padding. It is the amount of null characters after a line feed is sent to a device that the switch will pause before sending additional data. Normally, the carriage return padding field is put in first. If terminals are still losing information at the beginning of each line, the value in this field is increased. -This is X.3 parameter 14. 39Line Editing0or 1This option allows corrections to be made, during the data transfer mode, to data previously inputted by the user. -The parameter specifies the default mode of the editing function that the PAD performs. -If this parameter is enabled, the PAD will process editing characters. This only applies to data transfer mode. Editing will always be enabled (1) for command mode on terminals. If this field is enabled, timers should be turned off and the forwarding condition should be set to transmit on carriage return. If this field is disabled, all editing characters (LF, BS, etc.) are lost in data transfer mode. 0= editing not enabled during data transfer 1 = editing enabled during data transfer -This is X.3 parameter 15. 8187SVR 5210