A Comparison Research on DSCP Marking’s Impact to the QoS of VoIP-based and SS7-based Phone Calls

Daoud, Shaher; Qu, Yue

doi:10.1109/icicn.2019.8834943

Cited by 5 publications

(25 citation statements)

References 19 publications

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“…The highest packet loss is 0.27%, and the highest latency value is 54 ms. Examining the values of each of the dependent variables under Table 2 indicates that each of the values was within specifications which lead to good and clear phone conversations between both parties [1,2].…”

Section: Voip To Ss7 Test Calls With a Dscp Marking Value Of Cs0mentioning

confidence: 99%

“…Packet loss is 0%, and there is no indication of any latency. Examining the values of each of the dependent variables under Table 11 indicate that each of the values was within specifications that lead to good and clear phone calls between both parties [1,2]. Figure 4 illustrates the mean values of latencies for each of the 10 test cases.…”

Section: Ss7 To Voip Test Calls With a Dscp Marking Value Of Efmentioning

confidence: 99%

“…The mean value for the interpacket arrival time associated with each of the 10 test cases is 20 ms. This value goes hand-in-hand with the VoIP standards of good interpacket arrival time of 20 ms[1,2].…”

mentioning

confidence: 96%

“…The lowest mean value for MOS is 4.392 which belong to the CS0 marking of the SS7 based manual test calls.This value refers to a good quality VoIP phone conversation. According to VoIP standards; any MOS value between 4 and 5 indicates a good quality phone conversation[1,2].…”

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confidence: 99%

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A Comprehensive Study of Dscp Markings’ Impact on Voip Qos in Hfc Networks

Daoud¹,

Qu²

2019

SSRN Journal

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Various factors can have a significant degrading impact on the residential Voice over Internet Protocol (VoIP) phone services' quality. Hybrid fibre-coaxial (HFC) networks typically carry three types of traffic that include voice, data, and video. Unlike data and video, some delays or packet loss can result in a noticeable degraded impact on a VoIP's phone conversation. This paper will analyze and assess VoIP traffic prioritization and its impact on VoIP's quality of service (QoS) based on the concept of differentiated services code point (DSCP) markings. Call testing examines two types of calls. The first set of tests focus on calls that originate from a VoIP network and terminate on a signalling system 7 (SS7) network. The second experiment focuses on calls that originate from SS7 network and terminate on a VoIP network. The research results provide DSCP markings configurations that can improve phone conversations' quality.

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Section: Voip To Ss7 Test Calls With a Dscp Marking Value Of Cs0mentioning

confidence: 99%

Section: Ss7 To Voip Test Calls With a Dscp Marking Value Of Efmentioning

confidence: 99%

mentioning

confidence: 96%

mentioning

confidence: 99%

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A Comprehensive Study of Dscp Markings’ Impact on Voip Qos in Hfc Networks

Daoud¹,

Qu²

2019

SSRN Journal

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“…This research may benefit the different VoIP carriers to improve the quality of their VoIP traffic offered to their subscribers. Carriers can request and negotiate with other carriers in the telecommunications industry to prioritize their carried VoIP traffic [1,2].…”

Section: Research Purposementioning

confidence: 99%

A Comprehensive Study of DSCP Markings’ Impact on VOIP QoS in HFC Networks

Daoud¹,

Qu²

2019

IJCNC

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Attacks Notification of Differentiated Services Code Point (DSCP) Values Modifications

Alarood,

Abubakar Ibrahim,

Alsubaei

2023

IEEE Access

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The DSCP is an integral component within the Internet Protocol (IP) header of a packet, serving the purpose of categorizing and administering network traffic, as well as facilitating the provision of Quality of Service (QoS) on IP networks. In the context of network communication, it is feasible for an adversary to transmit packets with a DSCP value of "x," which represents a high priority. This action aims to prioritize the specified packet over other network traffic packets without triggering any notifications during the transmission session. It is possible to use identical DSCP values for both offensive and defensive purposes. This study therefore proposed a method for generating attack notifications in response to changes in DSCP values by using binary vectors to represent entries that detect attacks and those that do not. The method returns a list of Boolean values, each of which indicates whether or not the corresponding packet was classified as an attack. The study employed an experimental research methodology to generate transmission scenarios in which an attacker would attempt to transmit packets with a malicious DSCP value so that they would be prioritized over other traffic. A function was developed to detect deviation from normal and modification values involving DSCP value operations of normal traffic and generate alert. The finding of the experimental analysis indicates the vector, represents normal traffic because it does not have a DSCP value associated with an attack. The vectors representing spoofed, Assured Forwarding (AF), Class Selector (CS) and Expedited Forwarding (EF) respectively and generate an alert based on their values. This has contributed in detecting when an attacker tries to send packets with modified DSCP value in order to get them prioritized over the other packet on the normal traffic.

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A Comparison Research on DSCP Marking’s Impact to the QoS of VoIP-based and SS7-based Phone Calls

Cited by 5 publications

References 19 publications

A Comprehensive Study of Dscp Markings’ Impact on Voip Qos in Hfc Networks

A Comprehensive Study of Dscp Markings’ Impact on Voip Qos in Hfc Networks

A Comprehensive Study of DSCP Markings’ Impact on VOIP QoS in HFC Networks

Attacks Notification of Differentiated Services Code Point (DSCP) Values Modifications

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