Octagon Systems 5556 User Manual Download Page 20

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Technical specifications

Data rate

Up to 56K BPS

Data format

7 or 8 data bits; 1 or 2 stop bits; odd, even or no parity

Operation

Full duplex

Dialing

Rotary (pulse) or touchtone; pulse or tone may be combined in same
dial string. Timed pulse or wait for next dial tone.

Compatibility

Bell System 103/212A and CCITT V.22/V.22bis/V.21, V.23, V.32,
V.32bis, V.34, V.34bis, V.90.

Phone connectors

Two RJ11C telephone jacks; one for telephone line connect; one for

telephone set.

Audio monitor

On–board speaker for call progress monitoring.
Built in DAA

Power requirements

+5V +/–.25V @ 115 mA typical

Environmental

–40° C to –85° C

Size

4.5 in. x 4.9 in.

Summary of Contents for 5556

Page 1: ... in this document is believed to be correct However Octagon assumes no responsibility for any of the circuits described herein conveys no license under any patent or other right and makes no representations that the circuits are free from patent infringement Octagon makes no representation or warranty that such applications will be suitable for the use specified without further testing or modifica...

Page 2: ...ephone company may make changes in its facilities equipment operations or procedures that could affect proper functioning of your equipment If they do you will be notified in advance to give you an opportunity to maintain uninterrupted telephone service If you experience trouble with this device please contact Octagon Systems for information on obtaining service or repairs The telephone company ma...

Page 3: ...ds are too tall to fit in an XT but will fit in AT industrial size and other AT size cases All Micro PC products are modular so creating a system is as easy as selecting and plugging in the products you need ...

Page 4: ...mmands 11 Introduction 11 Operating modes 11 Escape sequence 12 Returning to online mode 12 AT commands 13 Result codes 17 S Register 18 Troubleshooting 19 Numbers instead of words display 19 Type the AT command and do not receive an OK message 19 The modem does not respond to your commands 19 The command characters do not appear on the screen 19 Double letters appear on the screen when typing com...

Page 5: ...eaker on off 14 Table 10 Enable disable result codes 14 Table 11 Read write to S registers 15 Table 12 Result code and dialing options 15 Table 13 Long space disconnect 15 Table 14 Carrier detect DCD options 15 Table 15 Data terminal ready DTR options 15 Table 16 Guard tone 16 Table 17 Make break pulse ratio 16 Table 18 Other commands 16 Table 19 Result code summary 17 Table 20 S Register summary ...

Page 6: ...V 22 V 22bis V 21 protocols It can be used with any Micro PC Control Card or Microcontroller and occupies one slot in a Micro PC card cage Major features n Compatible Hayes AT command set n Supports the following protocols Bell System 103 and 212A V 21 V 22 V 22bis V 23 V 32 V 32bis V 34 V 34bis V 90 n Automatic speed selection Automatic fallback to slower speed n Auto originate and auto answer mo...

Page 7: ...into a card cage The 5556 becomes charged by the user and the static discharges to the backplane from the pin closest to the card connector If that pin happens to be an input pin even TTL inputs may be damaged To avoid damaging your card and its components 1 Ground yourself before handling the 5556 Modem Card 2 Disconnect power before removing or inserting the 5556 card Equipment You will need the...

Page 8: ...8 Installation Before installing the 5556 Modem Card refer to Figure 1 for the location of various connectors and jumpers Figure 1 5556 Component diagram ...

Page 9: ...dress The 5556 can be configured as COM1 COM2 COM3 or COM4 It is configured at the factory to operate using COM3 To change the base port address you must reconfigure jumper block W1 Table 2 Base port address W1 Pins Jumpered COM port Address 13 14 15 16 17 18 19 20 COM4 COM3 COM2 COM1 2E8 2Efh 3E8 3Efh 2F8 2FFh 3F8 3FFh default Note When using Micro PC Control Cards be sure not to jumper the 5556 ...

Page 10: ...mple you should be able to read A31 on the backplane with the words OCTAGON SYSTEMS CORP running vertically along the left side of the backplane This position is feet down for a table mount cage and feet back for a rear mount 4 Slide the 5556 into the card cage The components on the card should face to the left The lettering on the card Octagon Systems Corp should be on the top edge of the card an...

Page 11: ...ke sure that the speed setting is 56K BPS in the Communication Program n Make sure your software program is set for an AT modem n Also refer to the Troubleshooting section AT commands Introduction The 5556 Modem Card is AT command compatible To use the 5556 modem you must have access to some type of communications software When selecting a communications software program be sure that it supports t...

Page 12: ... the modem is on line Type After the third plus is entered the modem should respond with an OK or 0 The command is not followed by a carriage return The escape character may be changed to any other character by changing the value in the S2 register Refer to the table on S Register commands Returning to online mode Once you have issued an escape sequence to the modem you are still connected to the ...

Page 13: ...he end of the command line Escape code go from on line mode to command mode One second pause before and after escape code entry The command is not followed by a carriage return Table 4 Set 300 1200 BPS protocol Command Description B0 B1 Uses CCITT V 22 2100 Hz answer backtone at 1200 BPS Uses Bell 212A 2225 Hz answer backtone operation at 1200 BPS Table 5 Dialing options Command Description D P R ...

Page 14: ...le 8 Volume control Command Description L0 L1 L2 L3 Low speaker volume Low speaker volume Medium speaker volume High speaker volume default Table 9 Speaker on off Command Description M0 M1 M2 M3 Speaker is always off Speaker is on until modem detects carrier Speaker is always on Speaker is on after dialing until modem detects carrier default Table 10 Enable disable result codes Command Description...

Page 15: ...xtended call progress dial tone and busy signal detection Table 13 Long space disconnect Command Description Y0 Y1 Long space disconnect disabled Long space disconnect enabled default Table 14 Carrier detect DCD options Command Description C0 C1 DCD always on state of carrier signal is ignored DCD on only in presence of carrier signal default Table 15 Data terminal ready DTR options Command Descri...

Page 16: ...ope Hong Kong 20 pps pulse dial with make break dial ratio of 33 67 20pps default Table 18 Other commands Command Description A O P T V0 V1 Z F J0 L0 M0 V Answer incoming call immediately Return to on line mode Set pulse dial as default Set tone dial as default Send numeric result codes Send word result codes Reset modem and set modem to factory default states Restore factory configuration RJ11 RJ...

Page 17: ...fully executed command line 300 BPS connection established Ring signal detected Carrier not detected within Register S7 detect time Error found in command line return to command line 1200 BPS connection established No dial tone detected within 5 seconds after going off hook Busy signal detected after automatically dialing a call Five seconds of silence was not detected when using the command in th...

Page 18: ...1 sec 1 255 0 1 sec 50 255 msec 0 255 0 02 sec Bit mapped Bit mapped 0 255 sec Bit mapped Bit mapped Bit mapped 0 255 0 01 sec 0 255 0 01 sec Bit mapped Number of rings to answer on Count number of incoming rings Escape character Carriage return character Line feed character Backspace character Dial tone wait time Wait time for remote carrier Comma pause time Carrier detect response time Delay bet...

Page 19: ...correctly The modem does not respond to your commands Make sure you have selected the correct COM port in your communications software program Make sure the W1 jumpers on the 5556 are set to the correct COM port The command characters do not appear on the screen Type ATE1 Return and then type AT Or use the echo no echo feature in your software program Double letters appear on the screen when typin...

Page 20: ...ame dial string Timed pulse or wait for next dial tone Compatibility Bell System 103 212A and CCITT V 22 V 22bis V 21 V 23 V 32 V 32bis V 34 V 34bis V 90 Phone connectors Two RJ11C telephone jacks one for telephone line connect one for telephone set Audio monitor On board speaker for call progress monitoring Built in DAA Power requirements 5V 25V 115 mA typical Environmental 40 C to 85 C Size 4 5 ...

Page 21: ...ction bandpass frequency Tone detection Off to On threshold Tone detection On to Off threshold Dial tone detect duration Ringback tone detect Duration Cadence Busy tone detect Duration Cadence 2 0 sec 290 Hz 33 dBM 35 dBM 3 0 sec 0 75 sec 1 5 sec 0 2 sec 0 67 sec 7 5 dBM 70 ms 10 pps 39 61 33 67 785 ms 550 Hz 3 dB 1800 Hz 6 dB 1 dB 0 dBM 3 dB 20 pps 665 Hz 1 5 sec USA CCITT Referenced to high chan...

Page 22: ...elephone line holding current 38 Vrms 0 mA 600 ohms 20 mA 100 mA Jumper configurations Table 23 Interrupt request lines W1 Pins jumpered IRQ 1 2 3 4 5 6 7 8 9 10 11 12 IRQ2 IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 default Table 24 Base port address W1 Pins jumpered COM port Address 13 14 15 16 17 18 19 20 COM4 COM3 COM2 COM1 2E8 2EFH 3E8 3EFH 2F8 2FFH 3F8 3FFH default ...

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