A New Method to Improve Voice over IP (VoIP) Bandwidth Utilization over Internet Telephony Transport Protocol (ITTP)

One of the pillars to run businesses is the telecommunications. Most of the institutions are migrating, if not already migrated, to Voice over Internet Protocol (VoIP) technology. However, VoIP still need some improvements, in terms of networks bandwidth exploitation and VoIP call quality, to meet the businesses expectations. Networks bandwidth exploitation, which is our concern in this paper, has been enhanced using different approaches and methods. This paper suggests a new method to enhance networks bandwidth exploitation Packet's payload shrinking (compression) approach. The suggested method works with the RTP protocol and called RTP Payload Shrinking (RPS) method. As the name implies, the RPS method will reduce the size of the RTP packet payload, through shrinking it based on specific algorithm, which enhances the networks bandwidth exploitation. The RPS method utilizes the RTP fields to store the values that are needed to apply the shrinking algorithm at the sender and receiver sides. The effectiveness of the proposed RPS method has been examined in comparison to conventional RTP protocol without shrinking. The deployment result showed that the saved bandwidth ratio has reached up to nearly 17% in the tested scenarios. Therefore, enhancing the network bandwidth exploitation.

Section: Introductionmentioning

confidence: 99%

New RTP Packet Payload Shrinking Method to Enhance Bandwidth Exploitation Over RTP Protocol

Hussein¹,

Abu-Alhaija²,

Nairoukh³

2020

“…The ubiquitous of VoIP resulting from i) the big number of VoIP applications that provide a low rate or free VoIP calls, ii) VoIP applications can be used by any handheld device such as mobile phone, iPad, and laptop, and iii) the useful services that can be accompanied by VoIP calls including interactive voice recognition and transfer the voicemail to email [3] [4]. Nevertheless, bandwidth exploitation and quality of service are the two main issues that slow the VoIP propagation [4] [5]. This article focuses on VoIP application bandwidth exploitation.…”

Section: Introductionmentioning

confidence: 99%

“…1 shows the VoIP packet format when using ITTP protocol. Several approaches have been proposed by the researchers to improve VoIP bandwidth exploitation such as VoIP packet multiplexing, VoIP packet header compression, and VoIP packet payload compression [5][12] [13]. This article proposes a new VoIP packet payload compression method to improve VoIP bandwidth exploitation over ITTP/IP protocols.…”

Section: Introductionmentioning

confidence: 99%

Effective Voice Frame Shrinking Method to Enhance VoIP Bandwidth Exploitation

Shambour¹,

Al-Khatib²,

Abualhaj³

et al. 2020

The traditional telecommunication system (e.g. landline telephone system) are increasingly being replaced by Voice over Internet Protocol (VoIP) systems because of the very low or free rate. However, one of the main handicaps of VoIP adoption is the inefficient bandwidth exploitation issue. A key approach to handle this issue is packet multiplexing. This article proposes a new VoIP packet payload compression method that enhances bandwidth exploitation over Internet Telephony Transport Protocol (ITTP) protocol. The proposed method is called payload shrinking over ITTP (ITTP-PS). As the name implies, the proposed ITTP-PS method shrinks the VoIP packet payload based on a certain mechanism. The ITTP-PS method has two entities, namely, sender ITTP-PS (S-ITTP-PS) and receiver ITTP-PS (R-ITTP-PS). The main function of the S-ITTP-PS entity is to shrink the VoIP packet payload, while the main function of the R-ITTP-PS entity is restoring the VoIP packet payload to its normal size. To perform the R-ITTP-PS entity function, the ITTP-PS method will reemploy the flag bits in the IP protocol header. The ITTP-PS method has been implemented and compared with traditional ITTP protocol without shrinking the VoIP packet payload. The comparison based on the VoIP packet payload shrinking ratio and isochronous calls capacity improvement ratio. The result showed that the VoIP packet payload shrinking ratio has enhanced by up to around 20%, while the isochronous calls capacity improvement ratio has enhanced by up to around 9.5%. Therefore, enhancing the VoIP bandwidth exploitation over ITTP protocol.

“…The 12-byte Real-time Transport Protocol (RTP), 6byte Internet Telephony Transport Protocol (ITTP), and 4-byte Inter-Asterisk eXchange (IAX) are the main examples of media transfer protocols. Both RTP and IAX take the help of the 8-byte User Datagram Protocol (UDP) to be able to convey the voice data, while ITTP is able to carry the voice data by itself [10][11] [12]. As mentioned earlier, adding these protocols along with the 20-byte IP protocol to the small VoIP packet payload leads to a considerable amount of BW waste.…”

Section: Introductionmentioning

confidence: 99%

Enhancing VoIP BW Utilization over ITTP Protocol

Hussein¹,

Al-Zyoud²,

Nairoukh³

et al. 2020

The revolution of Voice over Internet Protocol (VoIP) technology has propagated everywhere and replaced the conventional telecommunication technology (e.g. landline). Nevertheless, several enhancements need to be done on VoIP technology to improve its performance. One of the main issues is to improve the VoIP network bandwidth (BW) utilization. VoIP packet payload compression is one of the key approaches to do that. This paper proposes a new method to compress VoIP packet payload. The suggested method works over internet telephony transport protocol (ITTP) and named Delta-ITTP method. The core idea of the Delta-ITTP method is to find and transmit the delta between the successive VoIP packet payloads, which is typically smaller than the original VoIP packet payload. The suggested Delta-ITTP method implements VoIP packet payload compression at the sender side and decompression at the receiver side. During the compression process, the Delta-ITTP method needs to keep some values to restore the original VoIP packet payload at the receiver side. For this, the Delta-ITTP method utilizes some of the IP protocol fields and no additional header is needed. The Delta-ITTP method has been deployed and compared with the traditional ITTP protocol without compression. The result showed that up to 19% BW saving was achieved in the tested cases leading to the desired enhancement in the VoIP network BW utilization.