Designing a Microcontroller-based Half-duplex Interface Device Drove by the Touch-tone Signal

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Arief Goeritno
Ika Setyawibawa
Dwi Suhartono


The two Arduino boards (UNO R3 and MEGA2560 R3) have been constructed as the electronic modules of the gateway are become a haft-duplex adapter or can be referred to as the interface device for communicating (IDC). The IDC system drove by the touch-tone signal. The research objectives, i.e. assembly some of the hardware for the embodiment of the half-duplex interface adapter system, make a program structure, and perform a test of verification used in the modules of the gateway. The embodiment has been carried out by integrating all of the components by wiring to form an embedded system. Programming of the Arduino system is carried out by six stages of the algorithm, namely pins configuration, declaration of variables and constants, initialization, the main program, retrieve and send data, and output. The programming syntax structure is based on the Arduino software. The test of verification is carried out in the form of a simulation. The simulation results are obtained for six conditions, namely (i) simulation of the circuit of ring detection, (ii) simulation of the circuit of voice-operated transmit, (iii) simulation of the circuit off/on the hook of the telephone module, (iv) simulation of the circuit of tone decoder, (v) simulation of dial-up telephone numbers via touch-tone push buttons and switching IC circuits, and (vi) simulation of circuits of voice recorder and storage in the form of voice recording and playback. The success of the verification test with six conditions has been an indication that the Arduino-based IDC system is functioning as expected.


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How to Cite
A. Goeritno, I. Setyawibawa, and D. Suhartono, “Designing a Microcontroller-based Half-duplex Interface Device Drove by the Touch-tone Signal”, INFOTEL, vol. 13, no. 4, Dec. 2021.


[1] J.T.J. Penttinen. “Introduction,” in The Telecommunications Handbook: Engineering Guidelines for Fixed, Mobile and Satellite Systems. Chichester, WS: John Wiley & Sons, Ltd., 2015, pp. 1-19.

[2] R. Horak, “Public Switched Telephone Network,” in Telecommunications and Data Communications Handbook. Hoboken, NJ: John Wiley & Sons, Inc., 2007, pp. 200-246.

[3] B. Kushnick. (2017, Dec., 6). What Are the Public Switched Telephone Networks, 'PSTN' and Why You Should Care? [Online]. Available:

[4] L. Rosencrance. (2019, May). PSTN (public switched telephone network). TechTarget website. [Online]. Available:

[5] ITU. (2021). About International Telecommunication Union. ITU website. [Online]. Available:

[6] R. Sherman. (1999). Radio Communication System. [Online]. Available:

[7] C.A. Altgelt. (2005). The World’s Largest “Radio” Station. High Energy Physics. Madison, WI: University of Wisconsin [Online]. Available:

[8] D. John, “Radio System with Universal Communication Interface,” US-14985702-A, Oct. 14, 2002. [Online]. Available:

[9] S.W. Ellingson, Radio Systems Engineering. Cambridge, UK: Cambridge University Press, 2016, pp. 16–17.

[10] R.A. Wiedeman and P.A. Monte, “Worldwide telecommunications system using satellites,” US5915217A, Jun. 22, 1999. [Online]. Available:

[11] W-S. Yoon and Y.D. Kim, “Satellite Communications Systems Applications,” in Systems, Controls, Embedded Systems, Energy, and Machines, Richard C. Dorf, Editor, Boca Raton, FL: CRC Press, 2006, pp. 15.9.-15.28.

[12] D. Engber. (2014, Jan. 10). Who Made That Dial Tone? The New York Time Magazine. [Online]. Available:

[13] R. Marsden. (2015, Nov. 14). The Touch-tone Telephone Keypad: Rodhri Marsden’s Interesting Objects. Independent. [Onlien]. Available:

[14] C. Berkshire. (2021, February 14). The History of the Dial Pad. Talking Pointz website. [Online]. Available:

[15] L. Schenker. (1960, January). “Pushbutton Calling with a Two-Group Voice-Frequency Code,” in The Bell System Technical Journal, (Version of Record Online: 29 Jul 2013). [Online]. 39(1), pp. 235–255. . Available:

[16] ITU. (1993). ITU-T Recommendation Q24. [Online]. Available:!!PDF-E&type=items
[17] H. Schulzrinne, and T. Taylor. (2006, December). RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals. IETF RFC 4733. [Online], Available:

[18] A.Z. Dodd, The Essential Guide to Telecommunications, 5th Edition. Upper Saddle River, NJ: Prentice Hall, 2012, p. 183.

[19] G. Shreta, K. Subhasree, G. Soumen, G. Tanumay, and G. Suvojit. (2015, October). Dual Tone Multiple Frequency Based Home Automation System. International Journal of Engineering Research (IJER). [Online]. 4(10), pp. 542-544. Available:

[20] S.F. Davidson, D.G Maglaya, D.A. Sofia, S.J. Collar, and J.J. Stone, “Communications interface adapter,” WO 99/60723, Nov. 25, 1999. [Online]. Available:

[21] H. Chalopin and L. Tabaries, “Communication Interface,” US7613208B2, Nov. 3, 2009. [Online]. Available:

[22] M. Nakano, “Interface Converter Having Switching Ability,” US7076580B2, Jul. 11, 2006. [Online]. Available:

[23] R.L. Croyle, S. Cox, and N. Briffet, “Communication interface for an electronic device,” US7870319B2, Jan. 11, 2011. [Online]. Available:

[24] W.P. Tuck, “Communications Interface Adapter,” Patent 4 217 624, Aug. 12, 1980. [Online]. Available:

[25] M.A. Mazidi, S. Naimi, and S. Naimi, The AVR Microcontroller and Embedded Systems: Using Assembly and C. Upper Saddle River, NJ: Prentice Hall, 2011, pp. 40-43.

[26] A. Goeritno, J. Irawan, and Sopyandi. (2018, July). Segmentation of Load Groups on a Single Phase kWH-meter Using the Payload Data Handling System. International Journal of Advanced Research. [Online]. 6(7), pp. 415-426. Available:

[27] A. Goeritno, and M.Y. Afandi. (2019, Aug.). Designing a Security System Based-on Microcontroller Integrated into the Immobilizer System. International Journal of Electronics and Communication Engineering. [Online]. 6(8), pp. 1-11. Available:

[28] J. Purdum. (2012, September 10). Beginning C for Arduino: Learn C Programming for the Arduino and Compatible Microcontrollers, (1st ed.). [Online]. Available:

[29] B. Massimo and M. Shiloh. (2015, December 19). Getting Started with Arduino, 3rd Edition, Second Release). [Online]. Available:

[30] Motorola. (2010, October 5). How to Build Voice Activated Switch. [Online]. Available:

[31] Winbond. (2003, June). ISD2532/40/48/64: Single-Chip, Multiple-Messages, Voice Record/Playback Device 32-, 40-, 48-, and 64-Second Duration. Winbond Electronics Corp., San Jose, CA. [Online]. Available:

[32] Z. Weining, “Busy tone detecting method and apparatus,” CN Patent 101272420 B, Aug. 24, 2011. [Online]. Available:

[33] T.M. Cover, and J.A. Thomas, Elements of Information Theory, Second Edition. Hoboken, NJ: John Wiley & Sons, Inc., 2006, pp. 524-548.

[34] S.M. Redl, M.K. Weber, and M.W. Oliphant, GSM and Personal Communication Handbook, Norwood, MA: Artech House, Inc., 1998, pp. 172-173.

35] CadSoft, EAGLE Easily Applicable Graphical Layout Editor Manual Version 5. Palm Beach, FL: CadSoft Computer Inc., 2010, pp. 37-80.