Analysis of Voice Quality in Communication Between IP Phones on the Intranet Network at the State Polytechnic of Malang


  • Arlisa Krisna State Polytechnic of Malang
  • Martono Dwi Atmadja State Polytechnic of Malang
  • Farida Arinie Soelistianto State Polytechnic of Malang



Voice Quality, IP Phone, Codec, IP PBX, VoIP


IP Phone is a Voice over Internet Protocol (VoIP) device that can transmit voice using IP. From communication between IP Phones there are waveforms of input and output information signals, the response of voice amplitude to changes in voice frequency and delay value from time shift at the beginning of the wave period of the input and output information signal using the Transmission Test Set and Oscilloscope measuring instruments to determine the character of the sound quality in communication between IP Phones according to the parameter test results. The system test results are that the waveform of the input and output information signal at the sound frequency has a sine wave shape. However, the output waveform of IP Phone A with a frequency of 300Hz to 1100Hz and IP Phone B with a frequency of 300Hz to 1300Hz is distorted, then from the results of the Peak to Peak wave is known to have a voltage gain, that is, the greater the frequency value at the input, the smaller the value of the resulting voltage gain.


R. Abrar Muhammad Saleh, “Implementasi dan Analisa Kinerja VoIP Server Pada Jaringan Wireless LAN Menggunakan SmartPhone,” J. Elektr. Borneo, vol. 5, no. 1, pp. 1–5, 2019.

M. R. Syahrial, “Analisa Quality of Service IP Telephony dengan Metode Low Latency Queuing,” J. Telekomun. dan Komput., vol. 5, no. 1, p. 69, 2014.

I. Salsabila, S. Anwar, and R. Radhiah, “Perbandingan Kualitas Suara Smartphone Menggunakan Metode Dynamic Time Warping (DTW),” J. RESTI (Rekayasa Sist. dan Teknol. Informasi), vol. 5, no. 1, pp. 82–90.

F. L. Witi and A. Mude, “Analisis Jaringan Intranet Di Universitas Flores Menggunakan Quality Of Service (QoS ),” vol. 01, pp. 7–12, 2020.

S. M. L. Tobing, Tugas akhir Aplikasi VoIP Pada USUNET (Universitas Sumatera Utara). Universitas Sumatera Utara, 2011.

M. Exsan and U. Fadlilah, “Pembangunan Infrastruktur Voice Over Internet Protocol di Organisasi Perangkat Daerah Boyolali menggunakan Server Elastix,” Emit. J. Tek. Elektro, vol. 17, no. 2, pp. 39–47, 2017.

Sutarti, Siswanto, and A. Subandi, “Implementasi Dan Analisis QoS (Quality of Service) Pada VoIP (Voice Over Internet Protocol) Berbasis Linux,” J. PROSISKO, vol. 5, no. 2, pp. 92–101, 2018.

A Hariyadi et al 2021 IOP Conf. Ser.: Mater. Sci. Eng. 1073 012050

D. Anggraini, “Analisis FXS (Foreign Exchange Subscriber) Port Pada IP PBX (Internet Protocol Private Branch Exchange),” Politeknik Negeri Malang, Malang, 2019.

F. Group, “Datasheet FANVIL X1/X1P,” Cina, 2018.

K. Features, “Datasheet YEALINK T19P-E2,” Cina.

K. Wallace, Implementing Cisco Unified Communications Voice over IP and QoS (CVOICE) Foundation Learing Guide. 2011.

E. T. S. Institute, “Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON); General aspects of Quality of Service (QoS),” vol. V2.1.1, no. ETSI TR 101 329, 1999.

ITU-T Study Group 12, “ITU-T P.861 - Objective quality measurement of telephone- band (300-3400 Hz) speech codecs,” vol. 861, 1998.

D. R. J. Coolen, Electronic Communications, Third Edit. Canada: Erlangga, 1984.

S. Waluyanti, “Dasar-dasar sinyal audio 1.1.,” 2000.

M. H. Weik, “Telephone Network,” Comput. Sci. Commun. Dict., pp. 1752–1752, 2000, doi: 10.1007/1-4020-0613-6_19250.




How to Cite

A. Krisna, M. D. Atmadja, and F. A. Soelistianto, “Analysis of Voice Quality in Communication Between IP Phones on the Intranet Network at the State Polytechnic of Malang”, Jartel, vol. 12, no. 1, pp. 1-4, Mar. 2022.