User manual FURUNO IB-681 OPERATORS MANUAL

[. . . ] C Yo u r L o c a l A g e n t / D e a l e r 9-52, Ashihara-cho, Nishinomiya, Japan Te l e p h o n e : Te l e f a x : 0 7 9 8 -6 5 -2 111 0798-65-4200 All rights re s erv e d. Printed in Japan FIRST EDITION : G : O C T. OME-56093 (TE NI) IB-681 SAFETY INSTRUCTIONS Safety Information for the Operator WARNING ELECTRICAL SHOCK HAZARD Do not open the equipment. Immediately turn off the power at the switchboard if water leaks into the equipment or something is dropped in the equipment. Fire, electrical shock or serious injury can result. WARNING Do not place liquid-filled containers on the top of the equipment. [. . . ] The HSD terminal then sends the CIC command to the HSD modem which initiates receiving processing. When processing is completed, RI goes OFF and DSR, CTS, DCD go ON to communicate over land line. When DIC is sent by the HSD terminal instead of CIC, the HSD modem sends the indication VAL. Furthermore, when the CRN command or other three-character command is sent the HSD modem sends the indication INV. 9 3. 2. 2 Receiving and automatic data rate switching A call arrives at the data rate set on a subscriber's equipment, and the setting of DIP Switch SW3 determines if the call will be received or not when the data rate is different from that set on the IB-681. SW3 State OFF: No automatic data rate switching Remarks HSD call not accepted when its data rate is different from that set on the IB-681. Use this setting when the synchro clock to the HSD terminal cannot automatically be changed to match data rate. For example, if the Rate switch is set to 64 K and a call's rate is 56 K, the call is transmitted at 56 K. The synchro clock signal to the HSD terminal is also automatically changed to 56 K. Note: The HSD terminal is required to automatically synchronize to varied clock signal. ON: Automatic data rate switching 3. 3 V. 25bis Command, Indication For automatic calling, the HSD terminal directs the HSD modem with commands. These commands and indications are as below. Commands Command CRNxx DIC CI C Name x Call Request Number Disable Incoming Call Connect Incoming Call Transmit a call Prevents automatic reply. Upper case or lower case may be input, but case cannot be mixed. Indications Indication INC INV VAL CFIxx Name Incoming Call Invalid Valid Call Failed Call has arrived. "Call failed reply" (and reason) in response to CRN Description Indications are done with IA5 characters, in upper case only. 10 Command description Command Description Subscriber number specified and called. xx x Subscriber number (20 digits max. ) Useable characters: "0-9", " " (space), "-", "#" " " and "-" can be used to separate digits for clarity; they are not recognized as part of subscriber's number. Examples: CRN0030081123456789 (Subscriber's number is 003081123456789) CRN0030081-12-345-6789 (Same number as above except "-" inserted for clarity) CRN0030081 12-345-6789# (Same number as first number above except " ", "-" inserted for clarity and " #" inserted to show end of number) DIC CIC Prevents automatic reply to received calls. Allows automatic reply to received calls. CRNxx x Indication description Indication INC INV VAL Informs DTE of incoming call Informs of invalid command from terminal. RT: Subscriber's DTE is not answering (subscriber not connected). Description 11 3. 4 Call Sequence 3. 4. 1 Direct call setup sequence CES NCS FELCOM Calling operation (DTR ON) Access req. carrier ID SU HSUB Call to subscriber Reply from subscriber Fill in SU HSUB CES connect SU HSUB SES connect SU HSUB DSR ON CTS/DCD ON Figure 5 Direct call setup sequence 12 3. 4. 2 Address call setup sequence CES NCS FELCOM Calling operation (DTR ON) CTS/DSR ON SES RQ Access req. carrier ID SU HSUB Call to subscriber Reply from subscriber Fill in SU HSUB CES connect SU HSUB SES connect SU HSUB CTS OFF CTS/DCD ON Figure 6 Address call setup sequence 13 3. 4. 3 Manual call setup sequence CES NCS FELCOM Calling operation (dialing) Access req. carrier ID SU HSUB Call to subscriber Reply from subscriber Fill in SU HSUB OFF HOOK (DTR ON) RI OFF CES connect HSUB SES connect SU HSUB DSR ON CTS/DCD ON Figure 7 Manual call setup sequence 14 3. 4. 4 Automatic call clear sequence An automatic call is cleared when the DTR signal is received from the HSD terminal. The HSD terminal sends clear signal to CES, then HSD modem turns off DCD and CTS. release SU DSR OFF Figure 8 Automatic call clear sequence 3. 4. 5 Call clear sequence from land Land clears automatic call, then CES sends clear signal. Finally, the HSD modem turns off DSR, and the HSD terminal turns off DTR. CES Disconnect from land Max. [. . . ] Connecting a single PC as in the figures below you can connect to a subscriber much easier than by using a Dial -up Router. KlasHopper PCMCIA400 (Klas Ltd. , lreland) PC KlasHopper HSD modem PPP supported FELCOM81 TA/Router Terminal [Landline] · Drive software required to use the equipment. · PPP (Point-to- Protocol) supported. You can connect to an internet service provider with an ordinary modem or terminal adapter. · No limitations to software usage (Web Browser, E-mail, etc. ) RAMSAT RVH24(ODC-Caltronic A/S, Denmark) PC RAMSAT HSD modem FELCOM 81 TA (Synchronous Serial port) RAMSAT Terminal [Landline] · · No driver software required. 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